Fuel metering system and metering method of pt pump fuel injector

A technology of metering system and metering method, applied in the direction of charging system, instrument, measuring device, etc., can solve the problems of high impact of PT pump injector, non-continuous small flow, difficult accurate detection and measurement, etc. Accurate and effective value, low power consumption and simple structure

Inactive Publication Date: 2018-03-09
中国人民解放军防空兵学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a PT pump fuel injector fuel metering system, which solves the problem that it is difficult to accurately detect and measure the PT pump fuel injector due to its high impact and discontinuous small flow rate. technical problem

Method used

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  • Fuel metering system and metering method of pt pump fuel injector
  • Fuel metering system and metering method of pt pump fuel injector
  • Fuel metering system and metering method of pt pump fuel injector

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Embodiment 1

[0035] Such as figure 1 As shown, the metering system includes: a container 7 containing the amount of oil to be measured, a controller, an upper limit liquid level detection device 6 connected to the controller for detecting the upper limit height threshold of the amount of oil to be measured in the container, and a A counting device connected to the controller for counting the number of injections of the fuel injector; this container is connected to the fuel outlet of the fuel injector through a pipe.

[0036] The metering system also includes a fuel tank. After the fuel oil in the container is measured, it is discharged into the fuel tank from the oil outlet of the container through the oil discharge pipe. The oil discharge outlet of the container can be installed at the bottom of the container or installed on the side of the container. An oil discharge valve 8 is also installed on the oil discharge pipeline connected between the container and the fuel tank, and whether th...

Embodiment 2

[0070] The present invention also designs another PT pump fuel injector fuel metering system, the difference between this metering system and the PT pump fuel injector fuel metering system described in the above-mentioned embodiment 1 is that the metering system in embodiment 1 The liquid level detection device in the container is replaced by a fuel quantity detection device that can follow the change of the fuel liquid level in the container and detect the amount of oil in the container in real time. The fuel quantity detection device is connected with the controller to detect the quantity of fuel sprayed into the container by the fuel injector at the set injection times.

[0071] The oil quantity detection device in this embodiment is a float level gauge, which can monitor the liquid level height of the oil quantity in the container in real time with the change of the oil quantity in the container, and the float level gauge has a large measurement range and high sensitivity, ...

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Abstract

The invention relates to a metering system for fuel of a PT pump fuel injector and a metering method of the metering system. Two kinds of metering systems for fuel of the PT pump fuel injector are provided, wherein the first system comprises a container for containing fuel to be metered, and a controller, and the controller is connected with at least one upper limit liquid level detection device used for detecting the set upper limit height threshold value of the quantity of fuel to be metered in the container, and further connected with a counting device used for counting the number of fuel injection times of the fuel injector. The second system comprises a container for containing fuel to be metered and a controller, wherein the controller is connected with a counting device used for counting the set number of fuel injection times, and further connected with a fuel amount detecting device used for detecting the amount of the fuel which is to be metered and is injected into the container by the fuel injector according to the set number of fuel injection times. The mode of fixing the amount and measuring the number of times is adopted in the first kind of metering system. The mode of fixing the number of times and measuring the total amount is adopted in the second kind of metering system. Both the metering systems can achieve detection on constant volume high-impact and non-continuous small flow of fuel injected by the PT fuel injector.

Description

technical field [0001] The invention relates to a PT pump fuel injector fuel metering system and a metering method thereof, belonging to the technical field of fuel metering. Background technique [0002] The application of modern electronic control technology in the engine injection system has greatly improved the engine performance. The fuel injection quantity characteristic of the fuel injector of EFI engine is an important factor to determine the performance of the fuel injector. Therefore, the high-precision and high-efficiency measurement of the fuel injection quantity of the fuel injector is an important part of the technical performance evaluation of the fuel injector, and it is also the basis for fault analysis of the faulty fuel injector. The fuel injection volume test of PT injector mainly detects the precise flow rate under different fuel supply pressures, different speeds, and different load conditions. The impact pressure reaches 1200 atmospheres, 20 times per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M65/00
CPCF02M65/001
Inventor 高立龙王新晴李涛张茜萍蒋文峰陈欣鹏陈斌王闯万明杰马士友阮宜武贾博常小龙李毓辉马雪红孟岩斌董翔宇
Owner 中国人民解放军防空兵学院
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