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Engine start control method and electronic control unit

An electronic control unit, engine starting technology, applied in engine control, engine starting, engine components, etc., can solve problems such as engine cold starting, and achieve the effects of avoiding cold starting, reducing the probability of starting failure, and reducing wear and tear

Active Publication Date: 2019-10-29
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the intake air temperature and the internal temperature of the engine will drop again soon after the air intake heating system is turned off, and the air intake heating system can only be turned on after the vehicle is powered on again after the air intake heating system is turned off. Therefore, If the driver does not start the engine after the vehicle is powered on until the internal engine temperature has dropped below the start limit, the engine becomes cold start again.

Method used

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  • Engine start control method and electronic control unit
  • Engine start control method and electronic control unit
  • Engine start control method and electronic control unit

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Embodiment Construction

[0044] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0045] This embodiment provides an engine start control method, such as figure 1 As shown, the method may include the following steps:

[0046] S100. After the air intake heating system is turned off and the engine is not started, send a timing instruction to the timer, so that the timer starts timing;

[0047] Optionally, the state in which the air intake heating system is turned off and the engine is not started may occur when t...

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Abstract

The invention discloses an engine starting control method and an electronic control unit. The engine starting control method comprises the following steps that after an air inlet heating system is closed and an engine is in an unstart state, and a timing instruction is sent to a timer so as to enable the timer to start timing; after the engine starting instruction is received, the timing durationof the timer is obtained, when the timing duration is longer than a first preset duration, the engine starting instruction is discarded to prevent the engine from conducting cold starting, so that when the engine is judged to be the cold starting, the instruction for preventing the starting is sent out in time, the cold starting of the engine is avoided, then the starting failure probability of the engine is reduced, and the abrasion to the engine is reduced.

Description

technical field [0001] The invention relates to the field of engine control, in particular to an engine start control method and an electronic control unit. Background technique [0002] As vehicle control technology improves, so does engine start control technology. [0003] A cold start is when the engine starts with a low internal temperature. During the cold start of the engine, the fuel entering the engine cylinder is difficult to reach the ignition point, and the success rate of starting is low (failure to start will lead to increased engine wear and shortened life). Therefore, after the vehicle is powered on, if the electronic control unit (ECU, Electronic Control Unit) judges that the internal temperature of the engine is low, it will control the intake air heating system to be turned on for a period of time to increase the intake air temperature so that the internal temperature of the engine reaches a startable level. The temperature range, so that the temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/06F02N19/04F02M31/04
CPCF02D41/064F02M31/042F02N19/04
Inventor 李伦侯健鹏王兴元
Owner WEICHAI POWER CO LTD
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