What happens when you stop a torque converter?
What happens when you stop a torque converter?
However, the properties of the torque converter are such that when the vehicle is stopped corresponding to a nonmoving turbine, the engine can continue to rotate (as is does when the vehicle is stopped with the engine running).
How does a torque converter reduce gear ratio?
As can be seen, the initial torque multiplication when driving away from rest is considerable and the large gear ratio steps of the conventional transmission are reduced and smoothed out by the converter’s response between automatic gear shifts.
How are the vanes in a torque converter designed?
Torque converters are so designed that their internal passages formed by the vanes are shaped so as to make the fluid circulate with the minimum of resistance as it passes from one member to another member at definite impeller to turbine speed ratio, known as the design point. Chris Kulhanek.
How is torque calculated in a torque converter?
The torque that is applied to the pump portion of the torque converter is the engine brake torque (Tb ). Denoting the torque applied to the output shaft by the turbine TT, this latter torque is given by TT = TRTb where TR is the torque multiplication factor of the torque converter.
Is there a problem with the torque converter?
It could be a problem with the transmission, or the transmission could be perfectly fine and it could be a problem with the torque converter. Torque converter issues on a lot of older transmissions can be diagnosed by carrying out a stall-speed test.
How long does it take to stall a torque converter?
With one foot on the brake pedal, press the accelerator all the way for 2-3 seconds with the other foot. Be careful not the exceed 5 seconds or the transmission could blow out.The stall speed is the RPM the engine maxes out at.
How does a torque converter work on a turbine?
Basic Converter Operation: The torque converter is designed so the fluid flows from the impeller to the turbine then back to the impeller through the stator. This flow produces a maximum torque increase of 2:1 when the turbine is stalled.
What should the gear ratio be on a torque converter?
Your gear ratio helps determine how much energy it takes to move the vehicle. The numerically higher the gear ratio, the lower the flash stall. Typically, at least a 3.42 ratio is suggested with higher stall speeds so you may need to move to a different stall speed converter, depending on your application.
