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An electronically controlled common rail gasoline injection system for an internal combustion engine and its fuel injection control method

An injection system and internal combustion engine technology, applied in fuel injection control, electrical control, engine control, etc., can solve the problems of fuel pump motor power waste, complex oil return pipeline, and low pressure regulation accuracy, so as to improve engine working conditions, adjust The effect of fast speed and low energy consumption of the motor

Inactive Publication Date: 2019-02-12
广州杰治文电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electric fuel pump of this kind of mechanical pressure regulating valve has defects such as low pressure regulation accuracy, waste of fuel pump motor power, and complicated oil return pipeline.

Method used

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  • An electronically controlled common rail gasoline injection system for an internal combustion engine and its fuel injection control method
  • An electronically controlled common rail gasoline injection system for an internal combustion engine and its fuel injection control method
  • An electronically controlled common rail gasoline injection system for an internal combustion engine and its fuel injection control method

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Embodiment Construction

[0036] Figure 2 to Figure 7 Shown is an embodiment of an electronically controlled common rail gasoline injection system for an internal combustion engine and its fuel injection control method according to the present invention, as figure 2 As shown, it includes an engine working condition data acquisition system, a single chip microcomputer 7, a pressure sensor 8, a drive motor 9, a fuel pump 2, a fuel pump output pipe 3, and a fuel injector 5.

[0037] The engine operating condition data acquisition system includes an engine speed sensor 10 , a throttle displacement sensor 11 , an oxygen sensor 12 , and a temperature sensor 13 . The drive motor 9 is a DC brushless motor, connected to drive the fuel pump 2 . The fuel pump 2 is connected to the fuel injector 5 through the fuel pump output pipe 3 . The fuel injector 5 is a solenoid valve nozzle.

[0038] Such as image 3 As shown, the single-chip microcomputer 7 includes the following components:

[0039] The ADC analog-...

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Abstract

The invention discloses an electronically controlled common rail gasoline injection system of an internal combustion engine. The electronically controlled common rail gasoline injection system of the internal combustion engine comprises a singlechip, a pressure sensor, a driving motor, a fuel pump, a fuel pump output tube and a gasoline injection nozzle, wherein the driving motor is a direct-current brushless motor and drives the fuel pump in a connected manner; the fuel pump communicates with the gasoline injection nozzle by the fuel pump output tube; the pressure sensor is arranged on the fuel pump output tube and is connected with the singlechip; and the singlechip controls the driving motor and the gasoline injection nozzle in a connected manner. In addition, the invention also discloses a gasoline injection control method of the electrically controlled common rail gasoline injection system of the internal combustion engine. By the singlechip, fuel output pressure and starting time of the gasoline injection nozzle are adjusted in real time, and fuel injection is jointly controlled by the fuel output pressure and the starting time of the gasoline injection nozzle. The electronically controlled common rail gasoline injection system has the advantages of high adjustment precision, high adjustment speed, low energy consumption of the motor and long service life, so that fuel economization and emission reduction are realized effectively.

Description

technical field [0001] The invention relates to the technical field of gasoline injection, in particular to a gasoline injection system for an internal combustion engine and a fuel injection control method thereof. Background technique [0002] At present, the gasoline injection of the motorcycle engine is mainly controlled by the fuel output pressure of the electric fuel pump. Electric fuel pump structure such as figure 1 As shown, it includes a fuel tank 1, a fuel pump 2, a drive motor, a fuel pump output pipe 3, a pressure regulating valve 4, a fuel injector 5, and a fuel return pipe 6. The pressure regulating valve 4 is generally a mechanical structure, which is arranged on the output pipe 3 of the fuel pump and communicates with the fuel oil return pipe 6 . The driving motor of the fuel pump 2 is a DC brushed motor, and its voltage does not change during operation, which is a set value. Therefore, the output pressure of the fuel needs to be controlled through the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/30F02D41/02F02M51/06
CPCF02D41/02F02D41/30F02D2200/0602F02D2200/101F02M51/061
Inventor 李智勇魏武学凌进
Owner 广州杰治文电子科技有限公司
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