CN101987624B

CN101987624B - Hybrid power whole passenger vehicle operating mode switching control method

Info

Publication number: CN101987624B
Application number: CN2009100673918A
Authority: CN
Inventors: 李骏; 赵子亮; 刘吉顺; 刘明辉; 刘东秦
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2009-08-07
Filing date: 2009-08-07
Publication date: 2012-06-20
Anticipated expiration: 2029-08-07
Also published as: CN101987624A

Abstract

The invention relates to a hybrid power passenger vehicle operating mode switching control method. The method is characterized in that: a vehicle controller realizes mode switching of a vehicle through a controller area network (CAN) according to a strategy in a working process, wherein the vehicle control is implemented in the following modes: a stop mode, a start engine mode, a gear shift mode and a power allocation mode MOVE_BRAKING; and in a practical operating process of the vehicle, the vehicle control strategy switches to a corresponding mode according to the present state and signal of the vehicle so as to precisely switch the vehicle control modes finally. The mode switch is very stable and reliable. The dynamic property, the economy and the steerability of the vehicle are optimal.

Description

Hybrid power passenger car car load mode of operation method for handover control

Technical field:

The present invention relates to a kind of hybrid power passenger car car load mode of operation method for handover control, is a kind of control method of hybrid vehicle.

Background technology:

The control system exploitation of hybrid vehicle is a core work of hybrid vehicle research and development; Because hybrid power relates to a plurality of control system; The co-operative control process is complicated in the car load operational process, and each major company all researches and develops in the huge manpower and materials of input both at home and abroad.

The complexity of hybrid power system has determined the complexity of whole-control system exploitation, and therefore whole-control system development progress and the modification and perfection process to hybrid power passenger car proposed a great challenge.

Summary of the invention:

The object of the present invention is to provide a kind of hybrid power passenger car car load mode of operation method for handover control; It is switching control strategy between a kind of parallel hybrid electric car load mode of operation, pattern; This method adopts modular design method; All states of car load operation are divided into the different working pattern according to formulating good control policy; The different working pattern realizes the Different control function, and this modular control method helps red tape operation and debugging more, adds speed hybrid whole-control system development process.

Technical scheme of the present invention is achieved in that hybrid power passenger car car load mode of operation method for handover control; Whole-control system is by entire car controller (HCU); Engine controller (ECU), electric machine controller (MCU), gearbox controller (containing clutch control TCU), power battery management system (BMS) and anti-blocking brake system (ABS) are formed; It is characterized in that: entire car controller has realized that through the CAN network pattern is carried out mode switch according to strategy in the car load working process, and car load control comprises following pattern: shutdown mode STOP; Play driving engine STARTENGINE; Shift mode SHIFT; Power allocation pattern MOVE_BRAKING, car load integrated vehicle control tactics in actual moving process switches to corresponding pattern according to vehicle current state and signal, finally reaches the accurate switching of car load master mode;

(1) STOP car-parking model:

Realize engine shutdown and stopping for charging function according to conditions such as current vehicle speed, engine speed, gears; Can enter from STARTENGINE pattern, MOVING_BRAKING pattern and shift mode switch; The STARTENGINE mode switch to STOP pattern strategy is: under STARTENGINE pattern prerequisite, satisfy the engine starting success or overtime restriction run up time all switches to the STOP pattern; The MOVING_BRAKING mode switch is to STOP pattern strategy: if present mode is before the MOVING_BRAKING pattern topic down, if car load satisfy acceleration pedal be zero and parking period reach with 2 conditions of time threshold and switch to the STOP pattern; The shift mode switch is to STOP pattern strategy: under MOVING_BRAKING pattern prerequisite, satisfy acceleration pedal and be zero and the speed of a motor vehicle be zero promptly to switch to the STOP pattern;

(2) ENGINE-START plays the machine state:

It is a machine function that under the condition of neutral gear, realizes driving engine; Both can use the motor fire an engine also can use traditional starter fire an engine according to the control policy of car load; This pattern can only get into switchover policy by the stop pattern: brake pedal is in neutral gear for the zero-sum change speed gear box, and acceleration pedal does not start success greater than zero and driving engine;

(3) SHIFTING shift mode:

After getting into shift mode, entire car controller is controlled gearbox controller the controller that corresponding assembly is issued in orders such as driving engine and motor, realizes gear shift according to shift control strategy; In a single day shift mode switching condition, car load master mode get into shift mode after receiving the entering shift mode request that TCU sends under the prerequisite of MOVING_BRAKING pattern;

(4) MOVING-BRAKING normal vehicle operation state:

Can get into by two patterns according to the car load different state, be respectively stop pattern and shif pattern; The strategy that is got into the MOVING-BRAKING pattern by the stop pattern is that handle position is successful at direct speed and engine starting, otherwise returns to the stop pattern; The strategy that is got into the MOVING-BRAKING pattern by the shift pattern is that TCU sends the completion shift command, otherwise returns to the stop pattern.

Good effect of the present invention is that its mode switch is very steady, reliable, and it is optimum that car load dynamic property, economy and driving reach.

Description of drawings:

Fig. 1 is a hybrid power passenger car assembly control system structural representation of the present invention;

Fig. 2 is hybrid power passenger car mode of operation switching flow figure of the present invention;

Fig. 3 STOP car-parking model of the present invention diagram of circuit;

Fig. 4 ENGINE-START of the present invention plays machine state model diagram of circuit;

Fig. 5 SHIFTING shift mode of the present invention diagram of circuit;

Fig. 6 MOVING-BRAKING normal vehicle operation of the present invention state flow chart;

The specific embodiment:

Below in conjunction with accompanying drawing the present invention is done further description: shown in Fig. 1-2; Entire car controller is according to the state of demand with each parts feedback of chaufeur; The accurate switching of confirming car load mode of operation through the control policy that will discuss in detail and control algorithm once; And control command is input to the control unit of each parts through the CAN signalling methods, realize the various functions of hybrid vehicle.Car load control comprises following pattern: STOP (shutdown mode); STARTENGINE (playing driving engine); SHIFT (shift mode); MOVE_BRAKING (power allocation pattern); Car load integrated vehicle control tactics in actual moving process switches to corresponding pattern according to vehicle current state and signal; Finally reaching the accurate switching of a car load master mode, below is the detailed introduction of this patent to the control policy and the algorithm of each mode switch.

(1) STOP car-parking model:

This pattern realizes engine shutdown and stopping for charging function according to conditions such as current vehicle speed, engine speed, gears.

The STOP car-parking model can be entered from STARTENGINE pattern, MOVING_BRAKING pattern and shift mode switch.As shown in Figure 3; The STARTENGINE mode switch to STOP pattern strategy under STARTENGINE pattern prerequisite, satisfying the engine starting success or overtime restriction run up time all switches to the STOP pattern; The MOVING_BRAKING mode switch is to STOP pattern strategy: if present mode is that topic is down before the MOVING_BRAKING pattern; If car load satisfy acceleration pedal be zero and parking period reach with 2 conditions of time threshold and switch to the STOP pattern, the shift mode switch is to STOP pattern strategy: under MOVING_BRAKING pattern prerequisite, satisfy acceleration pedal and be zero and the speed of a motor vehicle be the zero STOP pattern that promptly switches to.

(2) ENGINE-START plays the machine state:

Pattern as shown in Figure 4 is under the condition of neutral gear, to realize a machine function of driving engine, both can use the motor fire an engine also can use traditional starter fire an engine according to the control policy of car load.This pattern can only get into switchover policy by the stop pattern: brake pedal is in neutral gear for the zero-sum change speed gear box, and acceleration pedal does not start success greater than zero and driving engine.

(3) SHIFTING shift mode:

As shown in Figure 5, behind the entering shift mode, entire car controller is controlled gearbox controller the controller that corresponding assembly is issued in orders such as driving engine and motor, realizes gear shift according to shift control strategy.

In a single day shift mode switching condition, car load master mode get into shift mode after receiving the entering shift mode request that TCU sends under the prerequisite of MOVING_BRAKING pattern.

(4) MOVING-BRAKING normal vehicle operation state:

Shown in 6, pattern can be got into by two patterns according to the car load different state, is respectively stop pattern and shif pattern.The strategy that is got into the MOVING-BRAKING pattern by the stop pattern is that handle position is successful at direct speed and engine starting, otherwise returns to the stop pattern.The strategy that is got into the MOVING-BRAKING pattern by the shift pattern is that TCU sends the completion shift command, otherwise returns to the stop pattern.

Switch instances when car load mode of operation, acceleration pedal signal and shift command signal move with car load; Can find out from the variation of real vehicle run curve; The car load mode of operation takes over seamlessly according to setting control policy; See that from the control effect speed of a motor vehicle and gearshift procedure operate steadily, mode switch is very appropriate opportunity, has reached splendid control effect.

Claims

1. hybrid power passenger car car load mode of operation method for handover control; Whole-control system is by entire car controller HCU; Engine controller ECU, electric machine controller MCU, gearbox controller contain clutch control TCU, power battery management system BMS and anti-blocking brake system ABS and form; It is characterized in that: entire car controller HCU has realized that through the CAN network pattern is carried out mode switch according to strategy in the car load working process; Car load control comprises following pattern: shutdown mode STOP; Play driving engine STARTENGINE, shift mode SHIFT, power allocation pattern MOVE-BRAKING; Car load integrated vehicle control tactics in actual moving process switches to corresponding pattern according to vehicle current state and signal, finally reaches the accurate switching of car load master mode;

(1) shutdown mode STOP:

Realize engine shutdown and stopping for charging function according to current vehicle speed, engine speed, gear condition; Can switch into from driving engine STARTENGINE, power allocation pattern MOVE-BRAKING and shift mode SHIFT; Playing driving engine STARTENGINE switches to shutdown mode STOP strategy and is: satisfy the engine starting success under the driving engine STARTENGINE prerequisite or overtime restriction run up time all switches to shutdown mode STOP rising; Power allocation pattern MOVE-BRAKING switches to shutdown mode STOP strategy: if current under the power allocation pattern MOVE-BRAKING prerequisite, if car load satisfy acceleration pedal be zero and parking period switch to shutdown mode STOP greater than 2 conditions of time threshold; Shift mode SHIFT switches to shutdown mode STOP strategy: it is zero under shift mode SHIFT prerequisite, satisfying acceleration pedal and the speed of a motor vehicle is the zero shutdown mode STOP that promptly switches to;

(2) play driving engine STARTENGINE:

It is a machine function that under the condition of neutral gear, realizes driving engine; Both can use the motor start the engine also can use traditional starter start the engine according to the control policy of car load; This pattern can only get into switchover policy by shutdown mode STOP: brake pedal is in neutral gear for the zero-sum change speed gear box, and acceleration pedal does not start success greater than zero and driving engine;

(3) shift mode SHIFT:

After getting into shift mode SHIFT, entire car controller HCU with gearbox controller TCU control driving engine with motor order issue the controller of corresponding assembly, according to shift control strategy realization gear shift; In a single day shift mode SHIFT switching condition, car load master mode get into shift mode SHIFT after receiving the entering shift mode request that gearbox controller TCU sends under the prerequisite of power allocation pattern MOVE-BRAKING;

(4) power allocation pattern MOVE-BRAKING:

Can get into by two patterns according to the car load different state, be respectively shutdown mode STOP and shift mode SHIFT; Strategy by shutdown mode STOP ingoing power allocation model MOVE-BRAKING is that handle position is successful at direct speed and engine starting, otherwise returns to shutdown mode STOP; Strategy by shift mode SHIFT ingoing power allocation model MOVE-BRAKING sends the completion shift command for gearbox controller TCU, otherwise returns to shift mode SHIFT.