Internal combustion engine fuel injection system for vehicles
A technology of fuel injection system and fuel injection valve, which is applied in the direction of fuel injection control, mechanical equipment, engine control, etc., can solve the problem of calculating the fuel injection amount, etc., and achieve the effect of avoiding increase and avoiding cost
Active Publication Date: 2014-06-04
HONDA MOTOR CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
That is, the intake state of the throttle passage portion and the bypass passage portion are different, so it is difficult to calculate an appropriate fuel injection amount by using the above-mentioned prior art method
Method used
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Embodiment Construction
[0028] Below, refer to the attached figure 1 ~ attached Figure 5 Embodiments of the present invention are described, first, in figure 1 Among them, the piston 12 is slidably engaged with, for example, the cylinder bore 11 of a water-cooled internal combustion engine E mounted on a motorcycle, and is used as an air intake device for supplying the air-fuel mixture to the combustion chamber 13 facing the top of the piston 12. 14, and an exhaust device 15 for exhausting exhaust gas from the combustion chamber 13 is connected to the cylinder head 16 of the internal combustion engine E, an intake passage 17 is formed in the intake device 14, and an intake passage 17 is formed in the exhaust device 15 Exhaust passage 18 is arranged. In addition, a spark plug 20 is installed in the cylinder head 16 , the tip of the spark plug 20 facing the combustion chamber 13 .
[0029] In the air intake device 14, a throttle valve 21 for controlling the amount of intake air flowing through the ...
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The invention provides an internal combustion engine fuel injection system for a vehicle, which determines the basic fuel injection quantity for setting an air-fuel ratio into a target one based on the opening degree of a restrictor, and performs fuel injection control so as to be a fuel injection quantity obtained by correcting the basic fuel injection quantity by means of the study value obtained according to a detection value of an oxygen detector. The internal combustion engine fuel injection system can perform controls so as to get a suitable air-fuel ratio even if a by-passing valve for controlling the air intake flow of a by-passing channel is opened to increase the air inlet. The by-passing channel bypasses the restrictor. The control unit performs injection quantity correction on an air intake part flowing into the air intake channel through the restrictor by adopting the first study value influenced by the opening degree of the restrictor. With respect to the air intake part flowing through the by-passing channel, the control part performs injection quantity correction thereon by adopting the second study value which is not related to the opening degree of the restrictor.
Description
technical field [0001] The present invention relates to a fuel injection system for an internal combustion engine for a vehicle. The fuel injection system for an internal combustion engine for a vehicle includes: a fuel injection valve that injects fuel into an intake passage; and a throttle valve that controls the amount of intake air flowing through the intake passage. ; a bypass valve, which controls the intake air flow through a bypass passage, and the bypass passage bypasses the throttle valve; a throttle valve sensor, which detects the opening degree of the throttle valve, that is, the throttle valve opening degree; a sensor that detects the residual concentration of oxygen in exhaust gas flowing through the exhaust passage; a rotation speed sensor that detects the rotation speed of the internal combustion engine; and a control unit that performs The fuel injection amount injected from the fuel injection valve is controlled, and the operation of the bypass valve is contr...
Claims
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IPC IPC(8): F02D41/14
Inventor 大西谦太高野祐纪岛田信弘永露敏弥田中弘志
Owner HONDA MOTOR CO LTD