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Engine starting system and control method thereof

An engine starting and engine technology, which is applied in engine control, engine starting, engine motor starting, etc., can solve problems such as worsening emissions and insufficient combustion

Active Publication Date: 2022-03-15
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, reducing the amount of intake air can cause incomplete combustion, resulting in worse emissions

Method used

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  • Engine starting system and control method thereof
  • Engine starting system and control method thereof
  • Engine starting system and control method thereof

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no. 1 approach

[0045] Hereinafter, an engine starting system and a control method thereof according to a first embodiment of the present invention will be described with reference to the drawings. In this embodiment, a four-stroke engine will be described as an example of the engine.

[0046] figure 1 is a block diagram showing a schematic configuration of the engine starting system according to the first embodiment of the present invention, figure 2 It is a schematic diagram showing the schematic configuration of the engine starting system according to the first embodiment of the present invention.

[0047] like figure 1 , figure 2 As shown, the engine starting system includes an input unit 1 , an engine ECU 2 and an output unit 3 .

[0048] The input unit 1 includes: a starter motor switch 11, which outputs a signal to the engine ECU 2 to turn on or off the motor generator 5 according to the driver's operation (on / off); an engine temperature sensor 12, The engine temperature sensor ...

no. 2 approach

[0082] Below, refer to Figure 5 ~ Figure 6 , the motor starting system and its control method of the second embodiment will be described.

[0083] Figure 5 It is a flowchart showing the starting operation of the motor starting system according to the second embodiment of the present invention. Image 6 It is a figure which shows an example of the starting operation of the motor starting system of 2nd Embodiment of this invention.

[0084] The motor starting system and its control method of the second embodiment are substantially the same as those of the first embodiment. Only the differences between the second embodiment and the first embodiment will be described below, and the same symbols will be assigned to the same structures and detailed description will be omitted.

[0085] like Figure 5 , Image 6 As shown, in the second embodiment, first, the power switch is turned on, and at this time, the engine ECU 2 is powered on and starts to operate (start).

[0086] Then...

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Abstract

An engine starting system, including: an engine temperature detection part (12), the engine temperature detection part (12) is provided on the main body of the engine (4), and detects the temperature of the engine (4); an engine stroke determination part (13, 14), the engine stroke determination part (13, 14) determines the stroke of the engine (4); the engine control part (2), the engine control part (2) When the temperature of the engine (4) detected by the temperature detection part (12) is below a set value, the motor generator (5) is caused to drive the engine (4), and the engine stroke determination part (13) , 14) When it is determined that it is in the fuel injection section, fuel injection starts. It can improve the engine's low-temperature starting performance at low cost without worsening emissions.

Description

Technical field [0001] The present invention relates to an engine starting control device and a control method thereof, and in particular to an engine starting control device capable of improving low-temperature starting performance and a control method thereof. Background technique [0002] It is difficult for the engine to start in the severe cold winter. This is because the temperature is low, the vaporization rate of the fuel decreases, and the mixture becomes thin and difficult to burn, causing difficulty in starting. In addition, the chemical reaction of the battery electrolyte is slow, resulting in insufficient power output during starting, insufficient starter power and insufficient ignition voltage, which also makes it difficult to start the engine. [0003] In order to solve the problem of difficult starting at low temperature, various solutions have been proposed in the past. [0004] For example, Japanese Patent Application No. 2001-356502 proposes a method of u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N11/08F02D41/06F02D41/00F02D41/30
CPCF02N11/08F02D41/064F02D41/0002F02D41/3005F02D41/009F02D2200/021F02D2200/0406
Inventor 杨俊帆
Owner DENSO CORP
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