Vehicle auxiliary braking control method and system and vehicle including same

Abstract

The invention discloses a vehicle auxiliary braking control method which comprises the steps that an accelerator pedal signal and a brake pedal signal of a vehicle are obtained; the state of an accelerator pedal and the state of a brake pedal are judged according to the accelerator pedal signal and the brake pedal signal; if the accelerator pedal is in a loose state and the brake pedal is in a depressing state, the current speed is further detected for the vehicle; if the current speed of the vehicle is larger than a preset speed, the opening size of an exhaust valve of a vehicle engine is adjusted, so that auxiliary braking is conducted on the vehicle through the engine. According to the embodiment of the vehicle auxiliary braking control method, frequent use of a brake disc for braking can be reduced, the safety of the vehicle in driving is improved, and the service life of the brake is effectively prolonged. The invention further discloses a vehicle auxiliary braking control system and a vehicle including the same.

Description

technical field [0001] The invention relates to the technical field of automobile auxiliary braking control, in particular to a vehicle auxiliary braking control method and system and a vehicle with the system. Background technique [0002] The engine rotary hydraulic valve mechanism is a kind of delayed closing of the exhaust valve of the engine cylinder, so that the compressed air in the cylinder will cause resistance to the upward movement of the engine piston, so as to achieve the effect of engine auxiliary braking. It is by changing the parts of the engine, replacing the camshaft, push rod, tappet, rocker arm and other parts with rotary valves, valves, valve sleeves and oil pistons. At the same time, by changing the brake pump, the branch brake pipe of the brake pump is connected to the brake cylinder. When the brake is stepped on, the piston push rod of the power brake cylinder turns the valve sleeve of the exhaust valve through a certain angle along the direction of ...

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Problems solved by technology

[0003] However, the above-mentioned changes are very complicated, and various parts in the engine need to be changed, and the machining accuracy of these parts is not easy to control

Such as the valve sleeve, if the rotation angle of the valve sleeve is too large, it will cause the exhaust valve to close late or not tightly during the intake, and the combustible gas in the engine cylinder will escape from the exhaust valve, thereby weakening the exhaust valve. power of the engine

Moreover, the above-mentioned scheme is purely mechanical modification, which cannot timely understand the driver's intention, and at the same time it is difficult to meet the consistency of engine matching

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