The invention provides a hydraulic retarder fault judgment method and device and a vehicle, and belongs to the technical field of hydraulic retarders. The method comprises the steps that when a hydraulic retarder quits working, whether the rotating speed of an engine is smaller than the preset rotating speed of the engine or not is judged; when the rotating speed of the engine is smaller than the preset rotating speed of the engine, whether the difference value between the oil temperature of the hydrodynamic retarder and the water temperature of the engine is larger than a first temperature difference value or not is judged, and if yes, it is determined that the hydrodynamic retarder has an exhaust fault; when the rotating speed of the engine is larger than or equal to the preset rotating speed of the engine, whether the difference value between the oil temperature of the hydrodynamic retarder and the water temperature of the engine is larger than a second temperature difference value or not is judged, and if yes, it is determined that the hydrodynamic retarder has an exhaust fault; the first temperature difference value is larger than the second temperature difference value. Whether the hydraulic retarder has the exhaust fault or not can be judged by judging the difference value between the oil temperature of the hydraulic retarder and the water temperature of the engine, and the safety of the hydraulic retarder is improved.
本发明提供了一种液力缓速器故障判断方法、装置及车辆,属于液力缓速器技术领域,其方法包括:当液力缓速器退出工作时,判断发动机转速是否小于发动机预设转速;当发动机转速小于发动机预设转速时,判断液力缓速器油温和发动机水温的差值是否大于第一温差值,若是,则确定液力缓速器存在排气故障;当发动机转速大于或等于发动机预设转速时,判断液力缓速器油温和发动机水温的差值是否大于第二温差值,若是,则确定液力缓速器存在排气故障;第一温差值大于第二温差值。本发明通过对液力缓速器油温和发动机水温的差值进行判断,即可实现对液力缓速器是否存在排气故障进行判断,提高了液力缓速器的安全性。
Hydraulic retarder fault judgment method and device and vehicle
一种液力缓速器故障判断方法、装置及车辆
2025-03-07
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
Control method of hydraulic retarder system, hydraulic retarder system and vehicle
European Patent Office | 2023
|Diagnostic method and device of hydraulic retarder and hydraulic retarder system
European Patent Office | 2023
|