Vehicle transmission system protective method
A transmission system and vehicle technology, applied to vehicle components, sound signal devices, signal devices, etc., can solve problems such as vehicle flameout or torque limit, reduce user driving comfort, and affect the service life of dual-mass flywheels, etc., so as to improve the service life , the effect of improving accuracy
Active Publication Date: 2015-12-16
SAIC MOTOR
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Problems solved by technology
[0005] In today's dual mass flywheel resonance detection technology, the dual mass flywheel speed fluctuation detection method has gradually become the mainstream, but its solution to protect the dual mass flywheel is to take measures after detecting the resonance of the dual mass flywheel through the vibration of the engine speed. A passive protection measure cannot completely eliminate the resonance of the dual-mass flywheel, and will affect the service life of the dual-mass flywheel to a certain extent
Actions taken after resonance is detected result in vehicle stalling or torque limiting, which further reduces driving comfort for the user
Method used
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Embodiment 1
[0019] Such as figure 1 , 2 As shown, a method for protecting a vehicle transmission system is to first set the first-level threshold of engine speed, the second-level threshold of engine speed, the speed sampling period, and the cumulative alarm threshold, where the second-level threshold of engine speed is less than the first-level threshold of engine speed, and the alarm controller After collecting engine speed data every interval speed sampling period, the operation is carried out in the following manner, and the alarm controller is provided with a counter:
[0020] 1) When the collected engine speed ≥ the first-level threshold of engine speed, the transmission system is in a safe working condition, the counter is cleared, and the alarm controller does not act;
[0021] 2) When the second threshold of engine speed
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The invention relates to the field of automobile control, in particular to a transmission system protective method. According to the vehicle transmission system protective method, after an alarm controller collects rotation speed data of an engine once in every rotation speed sampling period, operation is conducted as follows; a counter is arranged in the alarm controller, and according to a judgment result, the alarm controller selects not to act or give an alarm or give an alarm when the accumulative number exceeds a limitation. According to the vehicle transmission system protective method, the possibility of resonance of a dual mass flywheel is actively judged by setting safety conditions, a driver can increase the throttle index or downshift or put an automobile into the neutral gear so as to destroy resonance conditions, and therefore resonance of the dual mass flywheel is avoided; during judgment, the influence coefficients at different rotation speeds are fully considered, a weighted calculation manner is adopted for accumulation, and therefore the judgment accuracy is improved; and on the premise of not influencing drive to the greatest extent, the service life of the dual mass flywheel is prolonged, and a transmission system is effectively protected.
Description
Technical field [0001] The invention relates to the field of automobile control, in particular to a method for protecting a transmission system. Background technique [0002] The development of contemporary automobile technology can be said to be rapid, especially China's automobile industry has developed into the world's largest consumer country. Contemporary automobiles usually use dual-mass flywheels as transmission parts between the engine and the gearbox. With the increasing technical requirements of users for automobiles, the use of dual-mass flywheels reduces noise and improves drivability. The widespread use of low-speed resonance has become increasingly prominent. [0003] The solution of detecting and controlling the resonance of the dual-mass flywheel through the on-board computer ECU has gradually developed into the mainstream of controlling the resonance of the transmission system in recent years. [0004] How to detect the resonance of the dual mass flywheel and take ...
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IPC IPC(8): B60Q9/00B60Q5/00
Inventor 吴铭淞秦峰吴世伟吴日光黄亮
Owner SAIC MOTOR