Engine start-stop control method for vehicle self-adaptive cruise control system under follow-up stop working condition

A technology of adaptive cruise control and start-stop control, which is applied in the field of automotive electronics, can solve problems such as power system vibration, and achieve good driving experience and good promotion and application value

Active Publication Date: 2021-01-12
JIANGLING MOTORS
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The work of the engine will consume fuel all the time and the powertr

Method used

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  • Engine start-stop control method for vehicle self-adaptive cruise control system under follow-up stop working condition
  • Engine start-stop control method for vehicle self-adaptive cruise control system under follow-up stop working condition
  • Engine start-stop control method for vehicle self-adaptive cruise control system under follow-up stop working condition

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Embodiment Construction

[0024] The technical solution of the present invention will be described in further detail below through specific implementation manners and in conjunction with the accompanying drawings.

[0025] Traditional vehicle start and stop trigger conditions such as water temperature, battery SOC, vehicle speed, brake pedal, etc., when the engine start and stop function is turned on, the conditions for each start and stop are the vehicle's own state and do not include road environment information. This often results in unintended start-stop activation by the driver. For example, there are only 5 seconds left for the red light at the intersection of traffic lights. The traditional vehicle starts and stops after the driver's vehicle brakes and then enters the start and stop. When the green light is on and needs to start, it needs to be restarted. The time for the engine to stop without fuel injection is only a few seconds, and the amount of electricity and fuel injection required to res...

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Abstract

The invention relates to an engine start-stop control method for a vehicle self-adaptive cruise control system under a follow-up stop working condition, the system comprises an ACC running state and astart-stop allowing state, wherein a closing mode, a standby mode and a failure mode of the ACC running state are non-activated control modes, and the vehicle speed is not intervened; the activationmode, the driver overtaking mode and the following mode are activation control modes, and acceleration and deceleration control is carried out on the vehicle; wherein the follow-up stop mode working condition of the ACC running state comprises an ACC follow-up stop automatic starting stage within 3 seconds in the first stage; the ACC in the second stage needs to be operated by a driver to confirmthe re-starting stage after being stopped for 3 seconds; wherein the ACC start-stop allowing state comprises forbidding entering automatic stop and allowing entering automatic stop; when the ACC start-stop allowable state is that the engine is forbidden to enter automatic stop, the engine cannot enter automatic stop, similar to an automatic stop inhibition condition when an air conditioner is started; and if the engine enters the automatic stop state at present, the engine needs to quit the automatic stop state, and the engine operates normally.

Description

technical field [0001] The invention relates to a control strategy for starting and stopping an engine of a vehicle equipped with adaptive cruise control ("ACC" for short) under a stop-and-follow working condition, and belongs to the technical field of automotive electronics. Background technique [0002] In recent years, with the continuous popularization of automobile intelligent assisted driving, more and more models have realized L2 assisted driving function, and ACC is an important part of longitudinal control in L2 assisted driving. Add points. With the impact of emission and fuel credit policies, the current engine automatic start-stop function has almost become a standard configuration for vehicles. In congested or traffic light intersections where parking is waiting for a long time, turning on automatic start-stop can save fuel and improve vehicle NVH. Combined with the current development trend of three-cylinder engines, the advantages of ACC follow-stop into engi...

Claims

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Application Information

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IPC IPC(8): B60W30/17B60W10/06
CPCB60W30/17B60W10/06
Inventor 邓晶刘卫东吴方义王爱春黄少堂
Owner JIANGLING MOTORS
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