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Control device and control method for internal combustion engine

A technology for control devices and internal combustion engines, applied in the direction of engine control, fuel injection devices, fuel injection control, etc., can solve problems such as no disclosure

Active Publication Date: 2020-08-28
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the control device for an internal combustion engine described in Japanese Patent Application Laid-Open No. 2015-121231, there is no disclosure on this point.

Method used

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  • Control device and control method for internal combustion engine
  • Control device and control method for internal combustion engine
  • Control device and control method for internal combustion engine

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0021] refer to Figure 1 to Figure 7 A first embodiment of a control device for an internal combustion engine will be described.

[0022] like figure 1 As shown, a cylinder block 10 of an internal combustion engine is formed with a plurality of (only one is shown) cylinders 10A. A piston 11 is slidably housed in each cylinder 10A. A cylinder head 12 is connected to an upper end of the cylinder block 10 . Thus, a combustion chamber 13 surrounded by the cylinder 10A, the piston 11 and the cylinder head 12 is formed.

[0023] An intake passage 14 and an exhaust passage 15 are connected to the combustion chamber 13 . A throttle valve 16 for adjusting the amount of intake air introduced into the combustion chamber 13 is provided in the intake passage 14 . The internal combustion engine is provided with an intake valve 17 that communicates and blocks the intake passage 14 with the combustion chamber 13 . Intake air is introduced from the intake passage 14 into the combustion ...

no. 2 approach

[0052] refer to Figure 8 ~ Figure 10 Next, a second embodiment of the control device 40 will be described. In the second embodiment, in the energization control of the fuel injection valve 19 , the fuel injection valve 19 performs multiple injections in which the fuel corresponding to the required fuel injection amount Qd calculated by the injection amount calculation unit 44 is divided into multiple injections. This point is different from the first embodiment. In addition, in the multi-injection of the second embodiment, the fuel injection valve 19 divides the fuel corresponding to the required fuel injection amount Qd into P / L injection and F / L injection, and injects the fuel in two. Hereinafter, in the energization control of the fuel injection valve 19 , processing different from that of the first embodiment will be described, and a detailed description of the same processing as that of the first embodiment will be omitted.

[0053] like Figure 8 As shown, the contro...

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PUM

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Abstract

The present invention relates to a control device and a control method of an internal combustion engine. The control device of the internal combustion engine is configured such that a fuel injection valve selectively executes partial lift injection from a valve core not opening to a fully open position and full lift injection from a valve core opening to a fully open position. Lift jet. An internal combustion engine has fuel injection valves and a fuel supply system. The control device includes an energization time setting unit, a fuel pressure calculation unit, and a smoothing processing unit. The energization time setting unit is configured to set the energization time for the full lift injection based on the deactivated fuel pressure calculated by the smoothing processing unit, and to set the energization time for the partial lift injection based on the fuel pressure calculated by the fuel pressure calculation unit. .

Description

technical field [0001] The invention relates to a control device for an internal combustion engine. Background technique [0002] Japanese Patent Application Laid-Open No. 2015-121231 discloses a control device that controls energization to a fuel injection valve that injects fuel into a combustion chamber of an internal combustion engine. The fuel injection valve has a spool that is opened by energization, and the valve is opened by the spool to inject fuel. Fuel injection from the fuel injection valve includes partial lift injection and full lift injection. In partial lift injection, after the spool of the fuel injection valve is displaced in the valve opening direction by energization, the energization is stopped before the spool reaches the fully open position. In the full lift injection, after the spool of the fuel injection valve is displaced in the valve opening direction by energization, the spool reaches the fully open position and the energization is stopped. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/20F02D41/30
CPCF02D41/40F02D41/402F02D2041/1432F02D2200/0602F02D2200/0604F02D2200/0618Y02T10/40F02D41/02F02D41/182F02D41/34F02D41/36F02M69/046
Inventor 中野智洋
Owner TOYOTA JIDOSHA KK