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Engine starting method, device and system

A technology for starting an engine and an engine, applied in the fields of devices and systems, and methods for starting an engine, capable of solving problems such as the impossibility of starting and stopping the engine

Active Publication Date: 2020-07-07
GEELY AUTOMOBILE INST NINGBO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide an engine starting method, device and system to alleviate the technical problem that engine starting and stopping cannot be realized under high vehicle speed conditions.

Method used

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  • Engine starting method, device and system
  • Engine starting method, device and system

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Experimental program
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Effect test

Embodiment 1

[0035] An embodiment of the present invention provides a method for starting an engine, which can be applied to an engine controller of a hybrid electric vehicle. In a specific implementation, the engine control system of a hybrid electric vehicle is equipped with a motor auxiliary system, and the motor controller of the motor auxiliary system is connected with the Engine controller communication connection;.

[0036] Specifically, the above-mentioned motor auxiliary system can be installed at the crankshaft of a conventional engine, and generally includes a motor controller, a motor, and a battery that supplies power to the motor. Usually, the motor can be a BSG motor based on BSG (Belt DrivenStarter Generator, automobile engine start-stop technology) technology. Specifically, BSG technology belongs to a weak hybrid technology, which is a hybrid technology with idle stop and start functions. Realize the suspension of the engine before the red light and traffic jams. When the ...

Embodiment 2

[0083] On the basis of the above-mentioned embodiments, the embodiment of the present invention also provides an engine starting device, the device is arranged on the engine controller of the hybrid electric vehicle, the engine control system of the hybrid electric vehicle is equipped with a motor auxiliary system, and the motor auxiliary system The motor controller communicates with the engine controller, such as image 3 A structural schematic diagram of an engine starting device is shown, the device includes:

[0084] The monitoring module 30 is used to monitor whether the engine start signal is received during the engine shutdown process of the current vehicle;

[0085] The sending module 32 is used to send control parameters to the motor controller when the monitoring module detects the engine start signal, so as to trigger the motor to deliver the starting torque to the engine; wherein the control parameters include the starting torque and the torque rising slope corresp...

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Abstract

The invention provides an engine starting method, device and system and relates to the technical field of automobiles. The engine starting method comprises the steps of monitoring whether an engine starting signal is received or not in the engine stopping process of the current vehicle; if the engine starting signal is received, transmitting a control parameter to a motor controller to trigger a motor to transmit a starting torque; obtaining rotation speed of the engine in the starting torque transmitting process of the motor; judging whether the rotation speed is higher than a preset rotationspeed threshold or not; and if so, triggering the engine to enter a starting program. According to the engine starting method, device and system, a power generator can be triggered to transmit the starting torque to the engine so as to realize torque compensation and rotation speed synchronization; and therefore, power can be rapidly recovered for the vehicle to run after a driver steps on an accelerator, the engine starting time is greatly reduced, the power response delay is reduced, and the experience degree of the driver is also helped to be improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine starting method, device and system. Background technique [0002] In traditional fuel vehicles, after the driver releases the accelerator pedal, the transmission chain remains in a combined state, the engine enters a fuel-cut state, and the vehicle enters a coasting state. During this process, the kinetic energy of the vehicle needs to overcome the engine's backward drag resistance to do work, so that the vehicle's coasting distance is short. , the fuel economy is poor, and the engine is running during taxiing, making a lot of noise. Therefore, the engine start-stop function is often used to improve the above problems. [0003] In the prior art, the engine start-stop function is mainly when the vehicle is gliding at high speed, when the driving conditions and vehicle conditions are satisfied, the engine controller requests the gearbox to open the clutch and stop th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/40
CPCB60W20/40B60W2510/0638B60W2510/0657B60W2510/1025
Inventor 冯擎峰
Owner GEELY AUTOMOBILE INST NINGBO CO LTD