Sudden unloading speed regulation method for diesel engine

A speed regulation method and diesel engine technology, applied in the direction of governor, mechanical equipment, engine control, etc., can solve the problems of complex calculation process, slow speed adjustment response, and adjustment effect that cannot meet expectations.

Active Publication Date: 2021-05-07
上海新动力汽车科技股份有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This control method needs to combine the speed, time, and throttle opening, confirm the fuel injection volume by comparing the external characteristics, and adjust the fuel injection volume by integratin

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
  • Sudden unloading speed regulation method for diesel engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] The application scenario of this embodiment is a power station powered by a diesel engine to generate electricity.

[0079] Step 1: Initialize the sudden unloading speed regulation function of the diesel engine in the power station.

[0080] The ECU sets the constant speed A=1500rpm of the power station and starts the diesel engine. The diesel engine enters the speed regulation state after collecting the constant speed switch signal of the power station. The ECU monitors the real-time speed of the diesel engine. When the real-time speed of the diesel engine=constant speed A=1500rpm, the sudden discharge speed regulation function is turned on, and the fuel cut-off release flag is 1 at this time.

[0081] Step 2: ECU monitors the real-time speed of the diesel engine, and the ECU calculates the update time t of the diesel engine speed according to the real-time speed of the diesel engine. In this embodiment, the number of cylinders of the diesel engine is N C =4, the calc...

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 sudden unloading speed regulation method for a diesel engine. The method comprises the following steps that 1, a sudden unloading speed regulation function of the diesel engine is initialized; 2, an ECU monitors the real-time rotating speed of the diesel engine and judges whether the diesel engine happens sudden unloading action or not according to the real-time rotating speed of the diesel engine, if yes, the step 3 is executed, and if not, the real-time rotating speed of the diesel engine continues to be monitored; 3, the ECU sends a fuel cut-off request to a fuel quantity calculation module, when the fuel cut-off condition is met, the fuel quantity calculation module sets the fuel injection quantity to be 0, and the fuel cut-off action is executed on the diesel engine; 4, the ECU completes the fuel cut-off action, and the fuel quantity is recovered; and 5, the ECU starts fuel cut-off release timing, and the step 2 is executed after timing is finished. By means of the sudden unloading speed regulation method, the sudden unloading action of the diesel engine can be judged by monitoring the rotating speed of the diesel engine, an fuel cut-off action instruction is triggered, the frequency overshoot of the diesel engine can be reduced through fuel cut-off, and therefore the rapid and direct speed regulation effect is achieved.

Description

technical field [0001] The invention relates to a control method of a diesel engine, in particular to a speed regulation method for sudden unloading of a diesel engine. Background technique [0002] Diesel engine is a common equipment used to generate power and provide power. The sudden increase and sudden unloading characteristics are one of the important performance indicators of diesel engines. Among them, sudden unloading is a performance index for testing the transient frequency adjustment rate and the transient frequency adjustment stabilization time. The sudden unloading action of the diesel engine refers to the sudden unloading (shutdown) of the external load equipment. When the external load equipment is unloaded suddenly, the diesel engine cannot respond immediately, which will cause the output power of the diesel engine to change from a high value (such as 100KW) to a low value (such as 0KW) instantaneously. ), at this time, the speed of the diesel engine will sud...

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): F02D31/00F02D41/14F02D41/30
CPCF02D31/00F02D41/30F02D41/1401Y02T10/40
Inventor 李振华朱林峰孙显航赵松峰张卫鑫夏进进纪丽伟凌建群
Owner 上海新动力汽车科技股份有限公司
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