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
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  • 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,

Method used

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  • 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

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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 ...

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PUM

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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

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Application Information

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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
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