A method for fast starting of hybrid electric vehicle engine

A hybrid electric vehicle, fast 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., to achieve fast speed increase, simple control, enhanced power and reliability sexual effect

Active Publication Date: 2017-11-14
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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  • A method for fast starting of hybrid electric vehicle engine
  • A method for fast starting of hybrid electric vehicle engine
  • A method for fast starting of hybrid electric vehicle engine

Examples

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Effect test

Embodiment 1

[0025] The method for quickly starting a hybrid vehicle engine provided by the present invention is: applying a driving torque T to the engine to gradually increase the engine speed n. When the engine speed n=n3, T gradually decreases, and n3 is a setting Rotating speed.

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

[0027] For example figure 1 A hybrid hybrid power system shown includes a controller, an engine 1, a torsion damper 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. The controller can use the original vehicle controller of the vehicle, or it can be installed separately. The controller controls and connects the engine 1 and the ISG motor 3. The engine 1 is directly or through the torsion shock absorber 2 and the ISG motor ...

Embodiment 2

[0036] In this embodiment, the engine also has an additional mechanical load. The mechanical load is an air conditioner compressor as an example, such as figure 2 A hybrid hybrid power system shown includes a controller, an engine 11, a torsion shock absorber 12, an ISG motor 13, an electronically controlled clutch 14, a drive motor 15, an ISG motor controller 16, a drive 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. The controller can use the original vehicle controller of the vehicle, or it can be installed separately. The controller controls and connects the engine 11 and the ISG motor 13. The engine 11 is directly or through a torsion damper 12 and is mechanically connected to the ISG motor 13, and the ISG motor 13 is mechanically connected to the drive motor 15 through the electronic control clutch 14, and the drive motor 15 is connected to drive Bridge...

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PUM

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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, which belongs to the technical field of hybrid electric vehicles. Background technique [0002] A hybrid electric vehicle is defined as a vehicle that has at least one energy storage, energy source, or energy converter that can provide electric energy. Since the hybrid electric vehicle expects the engine to work in a higher efficiency area, 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, after the ISG motor quickly drags the engine to a certain set speed with a constant torque, the ISG torque is immediately reduced to 0Nm. This control method has the following shortcomings: (1) The starting time is too short, which is easy to cause the engine to flash back or the starting is unsuccessful; (2) Because the starting time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W30/18B60W10/06B60W10/08
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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