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A parallel-to-series control method for a gas-electric hybrid system

A hybrid system and series control technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of poor vehicle power, waste of engine fuel, and less electric energy recovered by motor braking, and achieve good power, The effect of saving fuel and improving comfort

Active Publication Date: 2017-04-05
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a parallel-to-series control method for a gas-electric hybrid hybrid power system to solve the problem of fuel waste caused by the frequent start and stop of the engine caused by the existing control method, less electric energy recovered by motor braking, and poor vehicle power performance The problem

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  • A parallel-to-series control method for a gas-electric hybrid system
  • A parallel-to-series control method for a gas-electric hybrid system

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Embodiment Construction

[0017] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 2 Shown is the flow chart of the parallel-to-series control method for the gas-electric hybrid hybrid power system of the present invention. It can be seen from the figure that the vehicle is in the parallel mode, and assuming that the real-time value of the main motor speed is N, the method includes the following steps:

[0019] (1) Determine the real-time speed N of the main motor, if N 2 ≤N1 , N 1 , N 2 In order to set the speed, at the same time the bus voltage of the power supply is greater than the set value U 设 And when the accelerator pedal is not stepped on, the clutch is disengaged; if the speed of the main motor N2 , the clutch is forcibly disengaged;

[0020] (2) After the clutch is disengaged, if the engine meets the shutdown conditions, only the engine air cut-off command will be given. When the engine ...

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Abstract

The invention discloses a parallel to serial control method for a gas-electric hybrid type hybrid power system. In a parallel to serial mode, the clutch separation condition is associated with the rotating speed and the voltage, and when an engine conforms to the engine halt condition and the rotating speed is higher than the idling rotating speed after the clutch separation, only gas is cut; an ISG (integrated starter generator) cannot immediately reversely drag the engine to the engine halt state; if a driver pedals an accelerator for acceleration at the moment, the gas is immediately supplied to the engine, and the ignition is carried out; the hybrid power system can fast enter the parallel mode; the unnecessary starting and stopping of the engine is avoided; the fuel is saved; meanwhile the method is associated with the voltage; a vehicle maintains better power performance under the condition that the electric quantity of a power supplying power source is insufficient, and the comfort, the power performance and the economic performance of the vehicle are improved.

Description

technical field [0001] The invention relates to a parallel-to-series control method for a gas-electric hybrid hybrid power system. Background technique [0002] Such as figure 1 Shown is an existing gas-electric hybrid system. It can be seen from the figure that the system includes a coaxially arranged engine 1, an ISG motor 3 and a main motor 5, wherein the ISG motor 3 and the output shaft of the engine pass through a torsional shock absorber. 2 is connected by transmission, while the ISG motor 3 and the main motor 5 are connected by transmission through the clutch 4, and the main motor is directly connected to the drive axle to drive the whole vehicle. The ISG motor controller 6 and the main motor controller 7 are connected with the supercapacitor and its management system 8 through high-voltage lines. According to the working state of the clutch 4, the system can be divided into series mode and parallel mode. The series mode means that the clutch is in a disengaged stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/02B60W10/06B60W20/15B60W20/40B60W20/20
CPCB60W10/02B60W10/06B60W20/20B60W2510/0638B60W2510/081B60W2510/244B60W2710/021B60W2710/0616
Inventor 岳淑彪陈慧勇苏常军杨学青许盛中李涛
Owner ZHENGZHOU YUTONG BUS CO LTD
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