A vehicle and its hill start assist system

Abstract

The invention discloses a hill starting auxiliary system of a vehicle. The system comprises an inner ring and an outer ring which are coaxially arranged, one of the inner ring and the outer ring is used for fixedly connecting a housing of a transmission, the other one is used for fixedly connecting the output shaft of the transmission, and a lock stop device is arranged between the inner ring and the outer ring; the lock stop device enables the inner ring and the outer ring to be able to rotate relatively forward when located in the first working position; the lock stop device enables the inner ring and the outer ring to be able to rotate relatively reversely when located in the second working position; the lock stop device enables the inner ring and the outer ring to be able to rotate relatively in two directions when located in the third working position; the lock stop device enables the inner ring and the outer ring to be able to stop relatively when located in the fourth working position. The formation and the control of the hill starting auxiliary system are simplified, the system reliability is improved, the structure of the transmission is more simplified, the cost is low, the implementation is easy, and the functions are rich. The invention further discloses the vehicle comprising the hill starting auxiliary system.

Description

technical field [0001] The invention relates to the field of starting on a hill, in particular to a hill starting assisting system for a vehicle. Furthermore, the present invention also relates to a vehicle comprising the above-mentioned hill start assist system. Background technique [0002] When the car starts on an uphill road with a slope or on an uphill road section with a slope such as an elevated road or a bridge, the driver needs to cooperate skillfully with the accelerator and handbrake to avoid the car from sliding downhill. If the driver has insufficient driving experience or operates If you are not careful, it is very easy for the engine to stall and the car to slide downhill. In severe cases, it will cause traffic accidents. With the rapid increase in car ownership, urban traffic jams are becoming more and more common, and repeated ramp starts will increase significantly. The labor intensity and psychological burden of the driver cause the driver to be tired an...

AI Technical Summary

Problems solved by technology

However, if the existing hill start assist system exceeds the braking delay time and the accelerator is not stepped on, the car will still slide downhill.

[0004] At the same time, the rotation direction of the wheels required by different types of gears of the automobile transmission is generally definite and unique. For example, the forward gear requires the wheels to rotate in the direction that makes the vehicle move forward, the reverse gear requires the wheels to rotate in the direction that makes the vehicle go backwards, and the park gear requires the wheels to rotate in the direction that makes the vehicle go backwards. It is required that the wheels are locked and cannot be rotated, etc. If the actual rotation direction of the wheels does not match that required by the transmission gear, there will be a sliding slope at start or a slope at parking, which may cause accidents in serious cases

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