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Control method of single-shaft parallel hybrid electric vehicle engine

A technology of hybrid electric vehicles and control methods, which is applied in the field of automobiles, can solve the problems of only considering deceleration and parking, and achieve the effects of increasing service life, reducing bearing, and reducing consumption and service life

Active Publication Date: 2018-01-16
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the program controls the engine start-stop strategy to control the engine flameout, it only considers deceleration and parking, and fails to comprehensively consider other conditions of the vehicle.

Method used

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  • Control method of single-shaft parallel hybrid electric vehicle engine
  • Control method of single-shaft parallel hybrid electric vehicle engine
  • Control method of single-shaft parallel hybrid electric vehicle engine

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Embodiment Construction

[0043] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a specific embodiment of a power assembly of a single-shaft parallel hybrid electric vehicle provided by the present invention.

[0045] A single-shaft parallel hybrid vehicle includes an engine, a motor capable of starting the engine, and a battery that supplies power to the motor. One end of the motor is connected to the gearbox, the other end is connected to the engine through a clutch, and the gearbox is connected to the axle. The electric motor can be used as a motor to directly drive the gearbox and / or start the engine; the gearbox can also be used as a motor in reverse, and the motor can be used as a generator to store energy.

[0...

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Abstract

The invention discloses a control method of a uniaxial parallel-type hybrid electric vehicle engine. The steps comprise that the high capacity range of a battery is set and the vehicle speed is preset; when receiving a flameout order and if the vehicle meets the two requirements that the vehicle is in decelerating mode and that the battery capacity is high, the flameout order won't be performed; the engine and a clutch is in conjunction state; when the vehicle speed is lowered to the preset vehicle speed, the flameout order is performed; and if the two requirements can not be met, the flameout order is performed. According to the invention, when the battery has high capacity and is decelerating mode, the flameout order is not performed immediately; at this time, the battery capacity is high, so the electric energy can be recycled by only relying on a small recycling braking force and the braking effect can be ensured by utilizing the engine braking force, the motor recycling braking force and the braking force together, the use of a braking system friction plate is reduced; the service life of the braking system is improved; and the effects of reducing consumption of starting and stopping strategies and prolonging the service life of the braking system are realized.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a control method for a single-shaft parallel hybrid electric vehicle engine. Background technique [0002] A hybrid vehicle is a vehicle with an electric motor as the auxiliary power of the engine. [0003] A hybrid vehicle includes an engine, a motor, and an AMT (Automated Mechanical Transmission, electromechanical automatic transmission) actuator. A clutch is provided between one end of the engine and the motor, the other end of the motor is connected to the AMT actuator, and the AMT is connected to the differential. The drive axle drives the wheels to rotate. [0004] When starting, the motor can drive the vehicle to drive at a low speed. After reaching a certain speed, the whole vehicle sends a start command, the clutch is engaged, and the motor drives the engine to rotate. After the rotation reaches a certain speed, the fuel system starts to supply oil, and the engine s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/10
CPCB60W10/06B60W10/08B60W2510/0638B60W2510/242B60W2520/10B60W2710/06Y02T10/62
Inventor 张龙聪周之光
Owner WEICHAI POWER CO LTD
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