Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for controlling injection in combustion cycle of cylinder of internal combustion engine indirectly

An internal combustion engine, indirect technology, applied in the direction of internal combustion piston engine, combustion engine, engine control, etc., can solve the problems of inaccuracy and no economic advantage

Active Publication Date: 2016-03-02
FAB ITAL MAGNETI MARELLI SPA
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to prevent the injector from being supplied with a pressure value different from the reference pressure (i.e. too low or too high) resulting in a lean or rich injection, it has been proposed to embed a damper in the injection system, said damper being configured to Prevents the amplitude of the pressure wave from being too large, leading to unacceptable inaccuracies in the injection quantity
However, it is not economically advantageous to embed the damper in the injection system

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 controlling injection in combustion cycle of cylinder of internal combustion engine indirectly
  • Method for controlling injection in combustion cycle of cylinder of internal combustion engine indirectly
  • Method for controlling injection in combustion cycle of cylinder of internal combustion engine indirectly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] exist figure 1 Among them, in the case of an indirect fuel injection system suitable for an internal-combustion heat engine (ICE, internal-combustion heat engine), for example in the case of the PFI (Port Fuel Injection) type, it is designated by reference numeral 1 as a whole, which does not have a common A device for fuel recirculation between the rail and the fuel tank.

[0019] The indirect injection system 1 includes a plurality of injectors 2 , specifically four injectors 2 , and a common rail 3 that supplies fuel to the injectors 2 under pressure. The indirect injection system 1 also includes a low-pressure pump 8 that supplies fuel from a tank 9 to the common rail 3 through a supply line 10 .

[0020] Furthermore, the internal combustion heat engine ICE comprises a number of cylinders (not shown), preferably an even number, arranged in rows and each housing a corresponding piston mechanically connected to the crankshaft of the engine through connecting rods in ...

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 provides a method for control injection of an internal combustion engine (ICE). The ICE comprises an indirect fuel injection system (1) including a plurality of injector (2) and a shared track (3) supplying fuel to the injector (2). The control method comprises the steps of obtaining a first critical inherent pulsation frequency of the injection system (1) and controlling the injectors (2) to supply the fuel to corresponding cylinders under pressure at injection frequency twice as much as the first critical inherent pulsation frequency of the injection system (1).

Description

technical field [0001] The invention relates to a method for controlling the injection of a cylinder combustion cycle of an indirect injection internal combustion engine. Background technique [0002] Indirect fuel injection systems suitable for internal combustion heat engines, for example in the case of PFI (Port Fuel Injection, Port Fuel Injection) type, usually comprise a plurality of injectors, supplying fuel under pressure to a common rail of the injectors, via a supply The piping (which is made of various materials and is usually housed inside the tank itself) feeds the fuel from the tank to the low pressure pump of the common rail, and is usually integrated into the low pressure pump and maintains the pressure of the system at about 4 bar to 6 bar absolute pressure regulator under pressure. The case of concern is that of indirect injection systems, which do not have means for fuel recirculation between the common rail and the fuel tank. [0003] Furthermore, an int...

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): F02D41/32
CPCF02D41/3809F02D41/401F02D41/402F02D2250/04Y02T10/40
Inventor C·圭多M·莫瑞里M·帕罗托G·普罗迪D·保利诺
Owner FAB ITAL MAGNETI MARELLI SPA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com