fluid coupling, also called fluid coupling, which is based on the liquid as a non-positive coupling of the working medium. It is composed of the turbine impeller and a sealed working chamber, the working chamber can be closed liquid circulation. A pump impeller mounted on the input shaft, a turbine mounted on the output shaft. When the internal combustion engine, the power machine such as a motor driven input shaft, the centrifugal pump liquid is thrown wheel, after which the high velocity fluid into the turbine to promote the rotation of the turbine, the energy obtained from the pump wheel to the output shaft. Finally, the liquid return pump wheel, a flow state.
1. The characteristics of the fluid coupling
(1) elimination of shock and vibration
(2) good starting performance and overload properties
( 3) the input speed is lower than the output speed, the rotational speed difference between the two shafts with load related increases in
(4) when the load is reduced, the output shaft speed increases until close to the input shaft rotation speed of the transmission torque tends to zero
2. The torque converter Introduction
The torque converter has a fixed guide wheel. Effect of the liquid flow guide wheel output torque of the torque converter can be higher or lower than the input torque, which is called a torque converter.
This is one type of transmission and hydraulic fluid as the working medium in a non-rigid torque converter. It has a closed working chamber, the liquid circulation within the chamber, wherein the pump impeller, a turbine and a stator, respectively, and the input shaft, the output shaft and the housing is associated. .
Characteristics of the rotational speed difference of the torque converter 3
axis with two torque transfer size varies, the rotational speed of the output shaft may be greater or less than the rotational speed of the input shaft;
[ 123] performance and good starting performance overload, can eliminate the shock and vibration; [transients 123]
will not be reflected to the load power machine, the power machine so as to ensure a stable work area;
good the automatic transmission performance, when the load increases output speed is automatically decreased, and vice versa automatically rise.
Fault detection and repair 4
Low oil pressure Solution:
1) Check the oil level: If the oil level is lower than the lowest scale, the oil should be added;
2) to check out pipe leaks;
3) check the inlet and outlet pressure of the valve operation, if the inlet and outlet pressure valve can not be closed, if installed, Part check for cracks and flaws, and an oil passage hole is smooth, and whether the spring rate decreases;
4) when the pressure valve is normal, the tubing should be removed or the filter clogging check, cleaning and remove deposits;
5) when the hydraulic oil to foam, checks the return pipe installation.
oil temperature is too high
The solution:
1) under the premise of engine idling to view the cooling system for leaks, whether the tank is filled with water;
2) check the transmission oil level is located between the two markers dipstick, if it is necessary to add the same brand low oil, otherwise discharged to a suitable location;
3) in time to avoid inefficient region, adjust the machine , so that converter operation in the high range zone; if
4) check the guide wheel is abnormal; temperature
5) check the tubing and the cooler, if the temperature is low touch described drain line or coolers dirty or clogged, needs to be cleaned; touch feel cooler if the temperature is high, the check should be fluid torque converter housing. If there is the end of the metal in the oil, described Songkuang bearing or damaged and need replacementBearings and check the pump and the pump wheel hub fastening bolts are loose.