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Control apparatus for direct injection engine

一种缸内喷射、控制装置的技术，应用在发动机控制、燃料喷射装置、燃料喷射控制等方向，能够解决发动机不能启动、燃料压力升压不良等问题，达到防止变得不能启动、防止不能启动的效果

Active Publication Date: 2016-10-05
SUBARU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the engine is started at the end of the production line (line inspection process) or when the engine is started after parts replacement, the fuel pressure may not be boosted properly due to entrained air, and the engine may not start.

Method used

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  • Control apparatus for direct injection engine
  • Control apparatus for direct injection engine
  • Control apparatus for direct injection engine

Examples

Experimental program
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Embodiment Construction

[0042] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same reference numerals are used for the same or corresponding parts in the drawings. In addition, in each figure, the same reference numerals are assigned to the same elements, and overlapping descriptions are omitted.

[0043] First, use figure 1 , the configuration of the control device 1 for the in-cylinder injection engine according to the embodiment and the configuration of the in-cylinder injection engine 10 to which the control device 1 is applied will be described. figure 1 It is a diagram showing the configuration of a control device 1 for an in-cylinder injection engine and an in-cylinder injection engine (hereinafter also simply referred to as "engine") 10 to which the control device 1 is applied.

[0044] The engine 10 is, for example, a horizontally opposed 4-cylinder gasoline engine. In addition, the engine 10 is an i...

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Abstract

The present invention provides a control apparatus for a direct injection engine that can prevent an engine from being incapable of starting even if a pressurization failure of fuel pressure occurs due to inclusion of air when starting the engine. An engine control unit (ECU) constituting the control apparatus for the direct injection engine includes a fuel injection controller that executes air purge control for performing fuel injection in an intake stroke if fuel pressure is below a predetermined pressure when an engine starts. When executing the air purge control, the fuel injection controller makes a fuel injection time of an injector longer than when the fuel pressure is higher than or equal to the predetermined pressure. When executing the air purge control, if the amount of fuel in a fuel tank is larger than or equal to a predetermined amount and an integrated value of a fuel injection amount (integrated injection amount) since start of the fuel injection is larger than or equal to a predetermined value, the fuel injection controller stops the air purge control.

Description

technical field [0001] The present invention relates to a control device for an in-cylinder injection engine that directly injects fuel into cylinders of the engine. Background technique [0002] In recent years, in-cylinder injection engines have been widely put into practical use, that is, by injecting fuel directly into cylinders of the engine, for example, it is possible to improve filling efficiency and knock resistance. In the above-mentioned in-cylinder injection engine, since it is necessary to directly inject fuel into the combustion chamber at a high pressure in the compression stroke, the pressure of the fuel supplied to the injector (hereinafter also referred to as "fuel pressure") is boosted using a high-pressure fuel pump. [0003] Also, in an in-cylinder injection engine, when the engine is started, the fuel injection timing is controlled so as to inject fuel into the compression stroke in consideration of startability, exhaust emissions, etc. (for example, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/40F02D41/06
CPCF02D41/062F02D41/40F02D41/401F02D2200/0602F02D41/3845F02D2041/389F02D2200/0616F02D2250/02F02M37/20F02M55/007F02D13/0219F02D33/003F02B2075/125Y02T10/12Y02T10/40
Inventor 滑川贵隆
Owner SUBARU CORP
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