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Safety starting control method for vehicle

A technology for safe start control and vehicles, which is applied in engine control, electrical control, fuel injection control, etc., and can solve problems such as wrong start, great impact on start safety, and wrong gear position judgment

Active Publication Date: 2007-04-25
BYD CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the gear position of AMT vehicles in China is judged by the voltage of the potentiometer installed on the shift mechanism. Due to various reasons such as the environment and the reliability of the potentiometer itself, the output voltage will be different from the actual gear voltage. If the actual gear position of the vehicle is in the first gear, but the gear position sensor judges that it is neutral, the driver may cause false start when the driver starts the ignition. , that is, the vehicle will rush forward suddenly, and accidents will easily occur

Method used

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Embodiment Construction

[0013] The utility model will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0014] The present invention needs switch-type neutral sensor, clutch position sensor, brake sensor and a MCU control switch etc. to be installed in the traditional ignition circuit. Then it is controlled and analyzed by a specific program.

[0015] As shown in Figure 1, the safety device for starting an AMT-equipped vehicle mainly includes a single-chip microcomputer (MC9S12D64), a switch-type neutral sensor, a clutch position sensor, a brake sensor, and an MCU control switch in the traditional ignition circuit. PB1, PB2 are the brake sign and ignition sign respectively. The flag is zero when the PB1 port is connected high. That is, the sign of not stepping on the brake is one, and the sign of stepping on the brake is zero. The flag is zero when the PB2 port is connected high. That is, the flag is one when the ignition is off...

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Abstract

The invention discloses a method for automobile safe start, especially the method for safe start of automobile with AMT. a neutral switch is added on the shifting mechanism of automobile with AMT while a switch controlled by MCU is added on the firing circuit. MCU controls controlling switch on by neutral switch signal, brake switch signal and position sensor signal of clutch. The switch is controlled off when the key is on the one shift signal or no-speed signal of engine. Furthermore whether driver can start with ignition is controlled. The invention can solve judgment mistake of potentiometer shifting sensor, the phenomenon that accident occurs easily when it is started and stopped, and improve start safety of AMT automobile.

Description

Technical field: [0001] The invention relates to a starting control method of an AMT (Automatic Mechanical Transmission) vehicle, especially a control method for improving the safety of starting the vehicle. Background technique: [0002] At present, the gear position of AMT vehicles in China is judged by the voltage of the potentiometer installed on the shift mechanism. Due to various reasons such as the environment and the reliability of the potentiometer itself, the output voltage will be different from the actual gear voltage. If the actual gear position of the vehicle is in the first gear, but the gear position sensor judges that it is neutral, the driver may cause false start when the driver starts the ignition. , that is, the vehicle will rush forward suddenly, and accidents will easily occur. Invention content: [0003] The purpose of the present invention is to solve the problems in the above-mentioned prior art, to solve the phenomenon that if the potentiometer ...

Claims

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Application Information

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IPC IPC(8): F02N11/08F02P11/00F02D41/04
CPCY02T10/48Y02T10/40
Inventor 唐新颖
Owner BYD CO LTD
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