Automobile cruise control system and method

A constant speed cruise, automobile technology, applied in the direction of control/regulation system, speed/acceleration control, vehicle accessories, etc., can solve problems such as abnormal cruise control of automobiles, achieve abnormal cruise work, low cost, and meet comfort requirements Effect

Active Publication Date: 2015-03-04
DONGFENG LIUZHOU MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a vehicle cruise control

Method used

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  • Automobile cruise control system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0034] In the step b of the constant speed cruise method, the reset gear of the cruise switch 1 is operated, the engine ECU unit 4 receives the reset signal sent by the first micro-processing module I2 and the vehicle speed is 37 km / h, and the clutch and brake devices are kept in the released state. The exhaust brake is turned off to enter the cruise, and the cruise speed is the speed saved in the last cruise; in step d, the deceleration gear 15 of the cruise switch 1 is operated, so that the engine ECU unit 4 controls the vehicle to decelerate at a step of 2 km / h; Because the engine ECU unit 4 realizes the vehicle speed control by controlling the engine speed, when the speed reaches the minimum, the vehicle speed also reaches the minimum value of the gear position, and the deceleration gear 15 of the cruise switch 1 cannot play the role of adjusting the vehicle speed. Enter cruising again; step on the clutch in step g to exit cruising; the rest are all the same as embodiment o...

Embodiment 3

[0036] In the step b of the cruise control method, the deceleration gear of the cruise switch 1 is operated, the engine ECU unit 4 receives the deceleration signal sent by the first micro-processing module I2 and the vehicle speed is 40 km / h, the clutch and the brake device are kept in the loose state, The exhaust brake is turned off to enter the cruise, and the cruise speed is the current speed at this time; step on the brake device in step g to exit the cruise; the rest are the same as the first embodiment.

Embodiment 4

[0038] In the step g of the cruise control method, turn on the exhaust brake to exit the cruise; the rest are the same as in the first embodiment.

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Abstract

The invention discloses an automobile cruise control system and method and belongs to the automobile manufacturing technical field. The automobile cruise control system comprises a first micro processing module I which is connected with an engine ECU (Electronic Control Unit); the first micro processing module I is connected with a cruise switch; the engine ECU is connected with a second micro processing module II through a CAN (Controller Area Network) bus; the second micro processing module II is connected with a speed sensor. The automobile cruise control method comprises receiving a speed signal through the second micro processing module and transmitting the speed signal to the engine ECU through the CAN bus; receiving a control signal and a clutch signal and an exhaust braking signal through the engine ECU and performing analysis on the signals; controlling the speed state through the engine ECU according to the control requirements when the cruise control conditions are met and transmitting a cruise control state signal to the second micro processing module II to control the working state of an indicator lamp. According to the automobile cruise control system and method, the problems of the automobile cruise control and abnormal prompts can be solved.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an automobile cruise control system and a constant speed cruise method. Background technique [0002] With the development of the automobile industry, the cruise system as an auxiliary driving system has been widely used in the driving system of the car. The cruise system is generally divided into a constant speed cruise system and an adaptive cruise system. The constant speed cruise system is used to control the constant speed of the car. drive. At present, the car cruise control system includes a vehicle speed signal connected to the engine ECU (vehicle computer), and the vehicle speed signal is connected to the engine ECU through a PWM (pulse width modulation) hard line. When the speed is fixed, the driver sets the desired vehicle speed by adjusting the cruise switch, and transmits the switch signal to the engine ECU through the PWM hard line. Control, the e...

Claims

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Application Information

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IPC IPC(8): B60K31/00
Inventor 覃熊艳姚柳成陈子邮李育方黄国桂王善超
Owner DONGFENG LIUZHOU MOTOR
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