Method for judging performance of electromagnetic oil injector through exhaust temperature test

A technology for exhaust gas temperature and fuel injectors, which is applied in the technical field of electromagnetic fuel injector performance detection methods, can solve the problems of expensive fuel injectors, cumbersome methods, and inability to completely determine fuel injector failures, and achieve efficient and reliable detection Effect

Inactive Publication Date: 2019-11-19
PANGANG GRP MINING
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, electromagnetic injectors are widely used in diesel engines. Electromagnetic injectors for diesel engines are the most critical and complex components in common rail fuel systems. They have the advantages of precise manufacturing, precise control, and long service life. The quality and system maintenance requirements are high, and the fuel injector is expensive. For example, the electromagnetic fuel injector of Cummins QSK19 engine is 25,000 yuan/piece
Second, when the electromagnetic fuel injector of the electronically controlled diesel engine fails, the engine will correspondingly experience symptoms such as difficulty in starting, unstable idling speed, poor acceleration, blasting, blue smoke, black smoke

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] In the following, the present invention will be further described in conjunction with the embodiments.

[0015] The present invention is preferably implemented through the following steps:

[0016] Step 1. After ensuring that the liquid level of each vehicle system meets the technical standards, start the engine idling for at least 5 minutes, preferably 5 minutes in this embodiment, and then use a thermometer to align the position where the exhaust manifold and the cylinder head are connected, and measure Obtain the exhaust temperature of each cylinder. If the exhaust temperature is between 60°C and 90°C, it is determined that the electromagnetic injector is working normally under idling conditions.

[0017] Step 2: Increase the speed to 1750 rpm-1850 rpm, and run at this speed for 3 minutes to 5 minutes, then use a thermometer to align the position where the exhaust manifold and the cylinder head are connected, and measure each Cylinder exhaust temperature, if the exhaust te...

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 relates to a method for judging the performance of an electromagnetic oil injector through an exhaust temperature test, and belongs to the technical field of electromagnetic oil injectorperformance detection methods. The method is suitable for an electric control diesel engine. According to the method, whether the oil injector has a fault or not can be judged only by testing the exhaust temperature of the electromagnetic oil injector under various load states of an electric control diesel engine, and thus the detection is more efficient, reliable and scientific.

Description

technical field [0001] The invention relates to a method for determining the performance of an electromagnetic fuel injector by exhaust temperature testing, belongs to the technical field of electromagnetic fuel injector performance detection methods, and is suitable for electronically controlled diesel engines. Background technique [0002] At present, electromagnetic injectors are widely used in diesel engines. Electromagnetic injectors for diesel engines are the most critical and complex components in common rail fuel systems. They have the advantages of precise manufacturing, precise control, and long service life. The quality and system maintenance requirements are high, and the fuel injector is expensive. For example, the electromagnetic fuel injector of Cummins QSK19 engine is 25,000 yuan / piece. Second, when the electromagnetic fuel injector of the electronically controlled diesel engine fails, the engine will correspondingly experience symptoms such as difficulty in ...

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
IPC IPC(8): F02M65/00
CPCF02M65/00
Inventor 蒋家国
Owner PANGANG GRP MINING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap