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Quick starting method of hybrid electric vehicle engine

A hybrid electric vehicle, quick start technology, applied in the direction of hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve the problem of large impact of torsional shock absorbers, etc., achieve rapid speed increase, avoid damage, avoid backfire or start unsuccessful effect

Active Publication Date: 2015-09-09
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for fast starting of a hybrid vehicle engine, in order to solve the problem that the impact of the existing engine starting method on the torsional shock absorber is relatively large

Method used

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  • Quick starting method of hybrid electric vehicle engine
  • Quick starting method of hybrid electric vehicle engine
  • Quick starting method of hybrid electric vehicle engine

Examples

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Embodiment 1

[0025] The fast starting method of hybrid electric vehicle engine provided by the present invention is: apply drive torque T to engine, make the rotating speed n of engine increase gradually, when the rotating speed n=n3 of engine, T gradually reduces, and n3 is a setting Rotating speed.

[0026] In order to express the above-mentioned technical solution in detail, a specific description will be given below in conjunction with the accompanying drawings.

[0027] For example figure 1 A series hybrid power system shown includes a controller, an engine 1, a torsional shock absorber 2, an ISG motor 3, an electronically controlled clutch 4, a drive motor 5, an ISG motor controller 6, a drive motor controller 7, Energy storage device 8. The controller is not shown in the figure, and the controller can use the original vehicle controller of the vehicle, or can be additionally installed separately. The controller controls the connection between the engine 1 and the ISG motor 3, the...

Embodiment 2

[0036] In this embodiment, the engine also has an additional mechanical load, the mechanical load is an air conditioner compressor, such as figure 2 A series hybrid power system shown includes a controller, an engine 11, a torsional shock absorber 12, an ISG motor 13, an electronically controlled clutch 14, a driving motor 15, an ISG motor controller 16, a driving motor controller 17, Energy storage device 18 , air conditioner electromagnetic clutch 19 and air conditioner compressor 20 . The controller is not shown in the figure, and the controller can use the original vehicle controller of the vehicle, or can be additionally installed separately. The controller controls the connection between the engine 11 and the ISG motor 13, the engine 11 is directly or through the torsional shock absorber 12 and the ISG motor 13 is mechanically connected, the ISG motor 13 is connected to the drive motor 15 through the electronically controlled clutch 14, and the drive motor 15 is connect...

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Abstract

The invention relates to a quick starting method of a hybrid electric vehicle engine; a driving torque T is applied to the engine, so that the rotating speed n of the engine is gradually increased; and when the rotating speed n of the engine is equal to n3, n3 is the set rotating speed, and T is gradually decreased. When the rotating speed of the engine reaches a certain value, the driving torque to the engine is controlled to gradually decrease, so that the impact on a twisting vibration reducer is effectively relieved; and as a certain starting time exists, the tempering phenomenon in starting or starting unsuccess of the engine is prevented, the building of engine oil pressure and engine part lubrication is facilitated, and the power and the reliability of a hybrid power system are enhanced to a certain extent.

Description

technical field [0001] The invention relates to a method for quickly starting a hybrid electric vehicle engine, belonging to the technical field of hybrid electric vehicles. Background technique [0002] A hybrid vehicle is defined as a vehicle that has at least one accumulator, energy source or energy converter that can provide electrical energy. Since a hybrid vehicle expects the engine to work in a higher efficiency zone, the engine needs to be started / stopped frequently during the operation of the vehicle . In the prior art, people often use the following method to quickly start the engine: during the starting process, the ISG motor always drags the engine to a certain set speed with a constant torque, and the ISG torque is immediately withdrawn to 0Nm. This control method has the following disadvantages: (1) The starting time is too short, which may easily cause the engine to temper or start unsuccessfully; (2) Due to the short starting time, the lubrication of the eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W30/18B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/00B60W30/18018B60W2710/0644B60W2710/0666Y02T10/62
Inventor 岳淑彪陈慧勇赵玉东苏常军许盛中杨学青
Owner ZHENGZHOU YUTONG BUS CO LTD
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