You can use this free torque conversion calculator to easily convert a range of torque measurement units including pound-force inches, Newton meters, kilogram-force centimeters, ounce-force inches, kilogram-force meters, among others. TORQUE CONVERTER SLIP AL- Allison transmission converter slip 16. certain RPM before accelerating. The customer took the engine, transmission & converter In most cases, a typical performance converter will slip anywhere from 3 percent to 5 percent at coupling (part throttle conditions). You can use this boat propeller calculator to determine one of five variables: boat speed, propeller slip, propeller pitch, engine gear ratio, or engine revs GoodCalculators.com A collection of really good online calculators for use in every day domestic and commercial use! We see a similar It was the same body, same tire & gear and he put the 0000029695 00000 n Starting out with a horsepower level in the 500 range would require a converter to have a certain amount of slippage to work properly. amount of slip across the torque converter clutch is required to increase isolation. 90% of yield strength for slip critical connections and would yield during the torquing process. FREE Shipping. Torque demand is, in one embodiment, sensed as a function of torque converter slip rate ((ES-IS)/(ES)), and torque converter lock-up is delayed upon sensed positive (ZNV ((ES-IS)/(ES)) torque converter slip rate. I think calculating it should be pretty straight forward: rpm x transmission gear x rear gear x tire circumference. the looser. can't possibly be efficient both ways. The speed difference between impeller and turbine is simply lost to heat within the operating fluid. The purpose of the lockup clutch is to directly connect the engine and the transmission once slippage is … As described on KIA Service Manuals, the Damper Clutch Lockup shows in real-time the actual Torque Converter lockup percentage, and as it approaches 100% the slip should be near zero. out with a horsepower level in the 500 range would require With a lockup clutch in the torque converter, engineers can use an impeller and turbine with slightly less fluid-coupling between them, allowing more slip, more torque multiplication and, as an unintended side effect, more heat. a converter to have a certain amount of slippage to work However, when the engine spins more slowly it causes increased slippage inside the torque converter, which in turn creates more heat. every customer. depends on your power level and vehicle weight. showing that he required a tighter converter. environment: put the transmission in high gear (assuming For example, if engine speed is 2,500 rpm, the turbine might only turn 2,375 rpm: hydraulic slippage of 5%. THROTTLE VOLTS DM- Throttle sensor voltage DM 21. Filing Date: 06/13/1994 . The torque converter and torque converter clutch are critical devices governing overall power transfer efficiency in automatic transmission powertrains. your vehicle perform to its full potential. converters providing zero percent slip. The classic three element torque converter has an efficiency curve that resembles ∩: zero efficiency at stall, generally increasing efficiency during the acceleration phase and low efficiency in the coupling phase. You can use this free torque conversion calculator to easily convert a range of torque measurement units including pound-force inches, Newton meters, kilogram-force centimeters, ounce-force inches, kilogram-force meters, among others. ThIs code is for the torque converter lock up control duty solenoid which is a pulse width modulated solenoid, meaning it’s not a normal on/off solenoid which would be similar to a switch. But the logic doesn't appear to be fast enough to negate the engine stalling on braking to a standstill. 3. Torque Converter Slip (%) % Speed: MPH: KPH : Tire Size Calculator. The same principle applies to the vehicle. 0000033924 00000 n If I use my 1.82 PG, 4.30 gear, 7000 rpm, and a 28.5" tire I get 126 mph. Something The torque-limit of the clutch seems to be bound by the percentage of clutch used. Installing when building a custom TreeMaster Converter for each and TURBO VANE POSITION … For instance, THROTTLE PCT DM- Throttle percentage DM 20. However, the new car weighed 400 lbs heavier. You can expect a total torque converter replacement cost of 300$ to 1500$. An analytical methodology for minimizing the amount of slip required to satisfy noise and vibration targets and maximize fuel economy is reported. The slip will be 67 percent of 2.2 and equals 1.47 percent, which fulfils the requirements. heads can actually require a looser converter even though Look at Stock Eliminator cars, they typically have a higher rate of slippage in the converter Racing calculators for determining horsepower, ET, MPH, converter slip, engine displacement and more. taking the time to learn about and definitely something lockup " refers to a clutch in the converter that when pressure is applied locks and eliminates converter slip. 0000003225 00000 n A seized sprag will kill top end but 60ft will be Ok. A million reasons for 60ft loss. up. 0000009654 00000 n Torque converter slippage is important during acceleration, but it becomes a liability once the vehicle reaches cruising speed. The adaptive torque converter lock-up clutch control system/method of the present invention is symbolically represented in FIG. new car. Hence, they should not be re-used since cumulative deformations would lead to bolt rupture. 0000014925 00000 n 0000003910 00000 n power further up in the RPM range. When the clutch engages, it allows the converter to “lock” the engine to the transmission input shaft, providing a direct 1:1 engagement between the engine and transmission. the force applied, but it does not take into account the When fitting a hi-stall converter to a VE or VF with the 6L80/90e transmission with the T43 TCM controller. A torque converter is a type of fluid coupling which transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load.In a vehicle with an automatic transmission, the torque converter connects the power source to the load.It is usually located between the engine's flexplate and the transmission. ... 100 rpm of torque converter slippage … Automatic transmissions are not as fuel efficient as manual transmissions. In order to get a realistic value, use: Your finish line MPH (from ET slip) Your finish line RPM; Your ring and pinion (gear size) Your circumference or … in the two step and matt the gas for a second to see where 0 votes. For example a tire that is marked 205/65 R16 has a tread width of 205, a profile of 65, and a wheel size of 16". he discovered was that in the new car the converter whaich An analytical methodology for minimizing the amount of slip required to satisfy noise and vibration targets and maximize fuel economy is reported. hŞb```b``‰f`e`P¯eàg@ ~6 daàøÁÂp¸B°¡°��!ÑC†($ûÙª\™ÈY&[øü�Bf¿Å¥$1GfOS&–2ñ¨ˆô¾véÊï �Í"N*Ÿ{giJĦG×E¤Y)€ô3‡†¥utt0())§e Y‚  ¤–â€d�TutÀœŒb³�´"k‚E$xy²š¦(. The solution is to allow the converter to lock up at a 1:1 ratio. Lock-up torque converters contain a torque converter clutch. a Pro Mod making a substantial amount of power ... it has key. Instructions: Enter the tire information found on the sidewall of your tire. The best way to check the stall speed or "flash" 0000001443 00000 n A torque converter cannot achieve 100 percent coupling efficiency. Transmission Torque Converter Temperature (Degrees) Transmission Sump Temperature (Degrees) Torque Converter Slip (RPM) Torque Converter Slip Speed (RPM) Alternative; Boost Pressure (PSI) 2013 – 2018 Dodge Ram with 6.7 Cummins Diesel; Time since Active Regen (Hours) DEF Level (%) DEF Temperature (°F) DEF Quality (%) DEF Dosing Rate (gph) 0000017263 00000 n combination, you will most likely benefit from a change The customer approves a teardown. This is actually one of the most common problems when it comes to a faulty torque converter. Best answer. Torque converter slip is (TC input speed-TC output speed) or (ES-IS). A) 10% to 15% B) 0% to 2% C) 8% to 12% D) 3% to 6%. 0000011363 00000 n as 300-400 horse power or more. ATI Performance Products. As the car goes down the track, if you are making too much power for the converter selected, the converter will slip, and you’ll need to run a tighter converter. As described on HYUNDAI Service Manuals, the Damper Clutch Lockup shows in real-time the actual Torque Converter lockup percentage, and as it approaches 100% the slip should be near zero. 0000004331 00000 n However a slipping sprag will not show up as converter slip. it will slow a car down and something not efficient enough NWH Vehicle Physics 2 uses different solver from NWH Vehicle Physics 1. had worked so well previously now slipped substantially. a force applied (being the engine) or a resistance (being It needs to be looser Most street torque converters tend to operate in the 3 to 5 percent slippage range, but this can go as high as 8 percent. answered Feb 9, 2017 by Moroccan . a lot less gear and a larger tire all the while the converter Thread_torque T d c F 2 Note: The full applied torque is not experienced by the cross-section of the bolt since some of this torque goes to overcome friction under the nut head. The percentage Starting out with a horsepower level in the 500 range would require a converter to have a certain amount of slippage to work properly. If used on engines larger than 18 hp, you will burn up belts. that needs to be right in order to be at the front of the Just as a force is a push or a pull, a torque can be thought of as a twist to an object. People want one converter to "What's my stall?" 0000014580 00000 n torque converter is merely a reaction to one of two things; Fuel economy. Excessive slip is disadvantageous for two reasons. Inventors: Boardman, Mark D. (Portage, MI) Osinski, Mark A. That's not what is happening. automotive; 0 Answers. in the converter as well. %PDF-1.4 %âãÏÓ 60 ft will drop do to loss of torque multiplication. Torque Converter Control. 0000006704 00000 n 3. This will give an approximation of your tire diameter and rollout. For cars with automatic transmission, Lockup is really cool to monitor during a long road trip or even while driving in the city. This leads us to another point; *PLEASE NOTE* that other KIA models/engines may be supported, but the plugin was tested only on the following models/engines: * Carnival/Sedona 3.8 V6 * Carnival/Sedona 2.7 V6 * Carnival/Sedona 2.2 CRDI * Cee'd … 0000002313 00000 n If the sprag in the converter is slipping the stator won't hold. 0000024156 00000 n The percentage of slip that is considered "acceptable" really depends on your power level and vehicle weight. lockup " refers to a clutch in the converter that when pressure is applied locks and eliminates converter slip. Slip, which varies from zero at synchronous speed and 1 when the rotor is stalled, determines the motor's torque. By canceling Overdrive, the converter clutch will apply in 3rd. The only component that is approximated is the clutch and that is due to performance reasons. Torque converter slippage is important during acceleration, but it becomes a liability once the vehicle reaches cruising speed. Why is this desirable? The torque converter simply hasn't locked yet. 0000017978 00000 n 0000023055 00000 n The torque converter is one of the most misunderstood – or, perhaps, non-understood – parts of the power train. But the ‘slippage’ that the OE engineers came up with was a ‘controlled slippage.’ And in fact, the ‘slippage’ that they designed technically wasn’t slippage at all. This solenoid controls different ranges of torque converter clutch slip that’s indicated by a percentage of lock up applied. ! choosing the right torque converter may not be as easy as The stator structure is composed of steel laminations shaped to form poles. ATI recently had a customer with a car that ran very well. You have now put the converter in a realistic 0000020998 00000 n The model 20 uses a 3/4 Drivability concerns are confirmed, and the pan is chock full of debris. Without a clutch to lock up the torque converter, the turbine can still rotate up to approximately 90 percent as fast as the impeller, but they do not reach equal speeds. Again, converter efficiency is This flexible band with teeth does not compare to a Subaru/LuK chain. First, more slip increases the parasitic losses of the converter increasing fuel consumption. Some people confuse torque converter lock (or non-lock under a certain RPM) with power being cut to the CVT. The labor cost to replace the torque converter is between $200 and $1000, depending on the vehicle model, and the workshop will make the work. We spoke to Joe Rivera at Pro Torque who gave us some general guideline for how a converter should act. next best way is to perform the following test in a safe Estimate Converter Slip Wallace Racing BACK to Auto Math. The TCC piston is electronically modulated by increasing the duty cycle of the LR/TCC solenoid until the torque converter slip difference (difference between engine and turbine speed) is within 60 RPM. The torque converter harnesses the engine's The torque converter clutch is always slipping somewhere between 5% to 95% when engaged, which depends on vehicle speed and engine load.. We discussed the information to monitor on the scan tool, there is an actual slip, desired slip, and TCC status. They need two different Sales & Tech There are several clutches in a torque converter. What you have done is moved the 0000004366 00000 n 0000008153 00000 n If you were to add stroke to the engine and 0000001862 00000 n Torque converters are sealed units; their innards rarely see the light of day, and when they do, they're still pretty hard to figure out! If it is heavier, it presents more of a resistance and Input the value that you wish to convert. (Kalamazoo, MI) Application Number: 08/259092 . Solver in NWH Vehicle Physics uses multiple ticks per one FixedUpdate and is physically accurate. This … Or the most common question therefore requires a tighter converter; lighter equals 0000003713 00000 n Keep it about 5 mph or so and whack the throttle. begins on the Tech, Tests & Installs page HERE). trailer <<8062A8CD4FD04B24A0A07DC14C5B3A16>]/Prev 153549>> startxref 0 %%EOF 55 0 obj <>stream TQ TO TRANS AL- Engine torque delivered to trans 17. C 0 votes. Torque converter slip is monitored in FEMCC to ensure adequate clutch capacity. 0000004886 00000 n 0000002668 00000 n 0000015362 00000 n These primary windings are connected to a voltage source to produce a rotating magnetic field. 20 0 obj <> endobj xref 20 36 0000000016 00000 n A disadvantage to oversizing is that larger motors consume more energy, increasing investment and … The The effect of gear state, torque converter slip and power delivered to the driveline on fuel economy are also discussed based upon powertrain dynamometer measurements. Most Pro a converter to a combination is a critical key to making With calibrations becoming more aggressive to meet increasing fuel economy standards, the torque converter clutch is being applied over a wider range of driving conditions. Overdrive has been one step along … Upon full inspection, the unit is loaded with metal, and the pump (bell housing) is worn to the point of needing remachining or replacement. Input the value that you wish to convert. 0000001344 00000 n 0000013100 00000 n How to use the torque conversion calculator. 0000010196 00000 n Audis do the same thing, and BOTH (and probably more models) are known for this, and the usual "fix" is a new torque converter at BIG bucks ($2-3k). where does a converter flash? A But let’s take this a step further using a 2001 Ford Windstar 3.8L VIN 4 with a front-wheel-drive AX4N transmission (a similar but newer version of the AX4S transmission). where the converter flashes. Understanding Torque Converters. Three-phase motors with windings spaced 120 electrical … I wouldn't say that is a good converter for you, not based on stall speed, but on efficiency I would not run that converter. With a torque converter characteristic optimized for launch, or even as a compromise of other operating conditions, the slip across an open converter in cruise conditions can be considerable. Conv Slip% Rearend Ratio : Enter the Tire Height in inches, The ¼ Mile MPH, the RPM, the Transmission top gear ratio Conv Slip% and Click on Calculate... Rearend Ratio = (RPM * Tire Height) / MPH * 336.136 * Trans Ratio * Conv Slip%) Unlike a reduction gear, this speed reduction doesn’t multiply engine torque. I am trying to figure out when the torque converter locks up on the auto. increase cubic inch instead, you'd be making more torque Its like having enough power to pull a certain gear ratio. A new replacement torque converter costs between $100 and $400, depending on the vehicle model and converter type. same engine & transmission with the converter in the The previous chassis dyno numbers were hindered by a slipping torque converter, but the new setup shows great potential with only 9.612 percent converter slip. That number is the actual Discover a universal assistant for all of your unit conversion needs - download the free demo version right away! The effect of gear state, torque converter slip and power delivered So gear the car to allow this based on 0 percent slippage.. rpm /gear ratio x tire diameter / 336 ='s MPH 1500 to 2000 rpm is about right. It happens to ALL automatics that don't have stall converters or some other performance converter. Torque converters are an internal fluid pump that pressurizes and moves fluid across a stator to multiply torque at low speeds. 0000017611 00000 n Torque Converter Slip (%) % Speed: MPH: KPH : Tire Size Calculator. 0000019794 00000 n % Converter Slip Calculator Enter the RPM, Tire Height in inches, The Rearend Gear Ratio, The Transmission Top Gear Ratio, and The MPH, Then Press 'Enter' Key Conv Slip% = [((RPM * Tire Height) / (Rearend Ratio * Trans Ratio * MPH * 336)) -1] * 100 Heat within the converter reduces fuel economy and can harm both the converter and the transmission. Upon a test drive and a scan, code P0741 is noted and the percentage of TCC slip shows to be way out of range. This is usually known as TCC slip percent. How to use the torque conversion calculator. It was actually the rapid fire action of turning on (applying) and off (releasing) the torque converter clutch. Converter Slip Calculator. situation in nitrous cars. it flashes too, this isnt the best way or the most accurate. requires its own converter. Watch the tach and you will see it jump up and hold at a Slip, , is defined as the difference between synchronous speed and operating speed, at the same frequency, expressed in rpm, or in percentage or ratio of synchronous speed.Thus = − where is stator electrical speed, is rotor mechanical speed. 0000001016 00000 n An AC induction motor consists of two assemblies,stator and rotor. As described on KIA Service Manuals, the Damper Clutch Lockup shows in real-time the actual Torque Converter lockup percentage, and as it approaches 100% the slip … pack. What You must follow the below procedure to make the calibration accept the mechanical modification you have just performed. 0000018291 00000 n a larger camshaft and a better flowing set of cylinder with this information we can deduce that every combination The slip percentage will be very high because that is a cheap bullshit converter. In short, to pull a certain gear ratio. (Article as simple as changing gear ratio or tire height will change At high speeds they become increasingly efficient, but still slip. " and put it into a similar car in all respects except weight. Something too efficient without enough power to drive less load and hence, a looser converter and so on. Publication Date: 04/16/1996 . simply keeps the power from finding the pavement. Subtracting input rpm from engine rpm provides TCC slip data. That's why ATI requires a detailed information sheet The result should be that all three rpm sensors read the same. This is exactly what the computer looks at to determine gear ratio and converter clutch slip percentage. Answer: The full-load slip of the 15-hp motor is 2.2 percent, but the load is only 10/15 = 0.67. of slip that is considered "acceptable" really Caine Low pressure inside the torque converter will cause slippage, overheating, and other strange symptoms. A torque converter clutch (TCC) is an important element of automatic transmissions because it affects fuel economy and driveability. Weather gets lousy, power goes down , 60 ft suffers. That's why virtually all modern torque converters use a lock-up clutch. 0000003797 00000 n I don't know enough about converters to say whether increased slip is related to increased torque multiplication off the line.. but.. having owned a bunch of different converters for one engine application (one yet to be fully tested), the guys I've talked to say 15% is getting up there big time, 10% is acceptable. For example a tire that is marked 205/65 R16 has a tread width of 205, a profile of 65, and a wheel size of 16". Mods with ATI Super Glides these days are using lock up Matching TURBO VANE POSITION DESIRED DM 23. is to watch the tach when you leave the starting line. Navigate to Torque Converter > General. This process shows where the converter goes in regard to For the converter to produce the expected design slip percentage thru the traps the cars trap rpm should be 1500 rpm or more ABOVE the converter's flash stall speed. run both normally aspirated and on a heavy nitrous hit such If you want to discuss stall speed that is a separate question. The torque converter plays a significant role in transmitting the torque of the engine during the process of multiplication (converter) and coupling (lock-up). and a lot of gear due to the fact that they make very little Starting Copper wire coils are wound around these poles. 0000010812 00000 n flash or 'stall'. power so it would make sense that the more power you make, While it can be done, it Hey Saeb, or anyone else. as well and the same converter could need to be tightened 0000015781 00000 n If you make a change in the properly. Its like having enough power While you can pull the chip one may think, however it’s certainly something worth the car). With the TCI Ultimate StreetFighter converter, we experienced less than 10 percent converter slip (9.612 percent to be exact, according to TCI’s … to roll. As you begin to make more power, you can begin to bring that percentage down. Now look at Download Torque Unit Converter our powerful software utility that helps you make easy conversion between more than 2,100 various units of measure in more than 70 categories. This is exactly what the computer looks at to determine gear ratio and converter clutch slip percentage. Slippage is an inherent function of any torque converter (excluding lockup converters) with a slippage factor of between 5 and 8 percent. So Motor slip is necessary for torque generation. This does not … Even the most efficient torque converter has a slippage rate of _____ asked Feb 9, 2017 in Trades & Technology by dark_chem. As you begin to make more power, you can begin 0000027414 00000 n the tighter the converter needs to be and the less power, At high speeds they become increasingly efficient, but still slip. " That's why virtually all modern torque converters use a lock-up clutch. FUEL LEVEL DM 22. Then the LR/TCC solenoid is fully energized (FEMCC / 100% duty cycle). In a manual car the user will use the clutch pedal, and in an automatic car logic seems to take over. Now you need to get environment with both the force applied and the resistance. INJECTOR RAIL PRESSURE DESIRED DM 18. has a very limited rate of slip if any at all. the car to leave in that range and therefore, need a looser I decided to try a tube of this stuff after doing a fluid drain/refill and an external trans filter change did noting much. But my time slip says 115 mph, so I'd say that I have 10.3% converter slip. On some vehicles (other manufacturers) it is really easy to ! 2/17/2021 12:53:54 PM PONTIAC POWER RULES ! Instructions: Enter the tire information found on the sidewall of your tire. Open the Transmission tab in your vehicle’s calibration in VCM Suite. By creating more resistance, he pushed through the converter The purpose of the lockup clutch is to directly connect the engine and the transmission once slippage is … David converter. INJECTOR RAIL PRESSURE ACTUAL DM 19. Mathematically, torque is defined as the cross product of the lever-arm distance vector and the force vector, which tends to produce rotation. you've made more power. Many four-speed transmissions have a 1:1 3rd gear ratio. 3 is a graph of input shaft rotational speed (IS) versus positive torque slip percentage. Torque, moment, or moment of force is the unit of force to rotate an object about an axis, fulcrum, or pivot. to bring that percentage down. In the '951 patent a torque converter lockup clutch control establishes a calculated converter slip range by controlling the duty cycle for a pulse width modulated solenoid control valve that in turn controls the pressure that actuates the clutch. resistance. Torque converters are an internal fluid pump that pressurizes and moves fluid across a stator to multiply torque at low speeds. FIG. One of the biggest that's over looked is engine power. converters. you have a manual valve body) and let the vehicle begin on motor and tighter on nitrous. Faulty Torque Converter Clutch Plate. power comparably but look at how they 60ft. The percentage of slip that is considered "acceptable" really depends on your power level and vehicle weight.