Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for detecting actual fuel injection quantity, corresponding control unit and corresponding readable program carrier

A technology of electronic control unit and fuel injection quantity, applied in the direction of fuel injection control, electrical control, engine control, etc., can solve the problems affecting engine performance, deviation, deterioration of exhaust emission conditions, etc., to achieve long life, improve vehicle performance, improve The effect of exhaust emissions

Active Publication Date: 2020-03-03
ROBERT BOSCH GMBH
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There may be a significant deviation between the actual fuel injection quantity and the predetermined fuel injection quantity, for example in the case of a blocked injector nozzle
This deviation will affect the performance of the engine and will also make the exhaust emission situation worse

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting actual fuel injection quantity, corresponding control unit and corresponding readable program carrier
  • Method for detecting actual fuel injection quantity, corresponding control unit and corresponding readable program carrier
  • Method for detecting actual fuel injection quantity, corresponding control unit and corresponding readable program carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, rather than to limit the protection scope of the present invention.

[0017] The vehicle's engine is used as a power source to output torque, and the power of the engine is transmitted to the ground through the clutch, gearbox, drive shaft and tires. At the initial stage of depressing the accelerator pedal, the engine speed will jump, which is called "jumping" here, because the above-mentioned power transmission system of the vehicle is an elastic deformation system. figure 1 Shows an example of the engine speed "running" when the accelerator pedal is depressed, including u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for detecting the actual fuel injection quantity of a diesel engine. The method comprising at least the steps that the fluctuation amplitude of the rotating speed of an engine caused by the fact that a fuel injector injects fuel into a combustion chamber of the engine is detected at a predetermined operating state of a vehicle; and the actual fuel injection quantity injected through the fuel injector to the combustion chamber of the engine is determined at least based on the fluctuation amplitude. The invention further discloses a corresponding electronic control unit for the diesel engine and a corresponding computer readable program carrier. According to the method, the determination of the actual fuel injection quantity provides the possibility of closed-loop control for the fuel injection quantity so that the service life of the fuel injector can be better estimated.

Description

technical field [0001] The invention relates to a method for detecting the actual fuel injection quantity of a diesel engine, a corresponding electronic control unit for a diesel engine and a corresponding computer-readable program carrier. Background technique [0002] Diesel engines are widely used in small, heavy or large vehicles due to their reliability, high thermal efficiency and high output torque. Diesel engines usually use a common rail fuel supply system to supply fuel to the fuel injector, and the fuel injector injects a predetermined amount of fuel into the combustion chamber of the diesel engine at a predetermined time according to the control instructions of the electronic control unit. [0003] In order to achieve harmony and unity in multiple indicators such as fuel economy, engine noise, exhaust emissions, power performance and durability of system components, the vehicle's electronic control unit can monitor Parameters such as sensor signals control the i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F02M65/00F02D41/30
CPCF02M65/00F02D41/30Y02T10/40
Inventor 陈泽
Owner ROBERT BOSCH GMBH