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Method and control device for function-checking ignition fluid injectors

A fluid injector, fluid injection technology, applied in the direction of fuel injection device, fuel injection control, electrical control, etc., can solve the problem of impossible to check the trouble-free working sequence of the ignition fluid injector

Inactive Publication Date: 2016-09-14
MAN ENERGY SOLUTIONS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the method known from DE 10 2008 007 325 A1 it is not possible to check the trouble-free working sequence of the ignition fluid injector of a stationary engine

Method used

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  • Method and control device for function-checking ignition fluid injectors

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Embodiment Construction

[0013] exist figure 1 , shows components of a dual-fuel engine, where figure 1 Cylinder 2 of such an engine is shown. The cylinder 2 includes a cylinder head 3 . In the cylinder 2, the piston 4 guided by the connecting rod 5 moves up and down. Fastened in the cylinder head 3 is a fuel injector 6 through which liquid fuel, in particular diesel fuel, can be injected directly via a fuel line 7 from a fuel pump 8 into a combustion chamber 9 of the cylinder 2 . In this case, the fuel pump 8 is preferably initially driven by the crankshaft of the engine. The fuel injector 6 , the fuel line 7 and the fuel pump 8 are elements of a fuel supply device for supplying liquid fuel into the combustion chamber 9 of the cylinder 2 . This fuel supply device is activated in particular when a liquid fuel, in particular diesel, is combusted as fuel in cylinder 2 of a dual fuel engine.

[0014] For the combustion of liquid fuel, charge air 10 can additionally be introduced into the correspondi...

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PUM

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Abstract

The invention provides a method for function-checking ignition fluid injectors (13) of an engine and especially a dual-fuel engine. The engine includes a plurality of cylinders (2) and an ignition fluid injection system. The ignition fluid injection system is provided with an ignition fluid conveying pump (16) shared by the cylinders, an ignition fluid storage unit (22) shared by the cylinders and separate ignition fluid injectors (13) used for the cylinders. First, the reference pressure is determined and / or the postion of a reference suction throttling valve is determined. Then the testing pressure is determined and / or the position of a testing suction throttling valve is determined. The position of the reference suction throttling valve and the position of the testing suction throttling valve are compared and / or the testing pressure and the reference pressure are compared. Therefore, whether the first ignition fluid injector (13) is running in a faultless condition or not can be determined.

Description

technical field [0001] The invention relates to a method for performing a function check of an ignition fluid injector. The invention also relates to a control device for carrying out the method. Background technique [0002] From practice, so-called dual-fuel engines are known, in which a liquid fuel, such as diesel, is combusted on the one hand, and a gaseous fuel, such as natural gas, on the other hand. In the gas mode of operation of such a dual-fuel engine, a lean gas-air mixture is generally introduced into the cylinders of the engine and ignited by the ignition energy of an ignition fluid likewise introduced into the cylinders. Accordingly, a dual fuel engine includes an ignition fluid injection system, wherein the ignition fluid injection system includes an ignition fluid delivery pump common to a plurality of cylinders, an ignition fluid storage unit common to the plurality of cylinders, and an ignition fluid storage unit for the plurality of cylinders. Individual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M65/00F02D41/38F02D41/22F02D41/00
CPCF02D41/0025F02D41/221F02D41/38F02M65/00F02D19/0623F02D19/10F02D41/0027F02D41/042F02D41/20F02D41/3082F02D2200/0602F02M43/04Y02T10/30F02B7/08F02D19/105F02D41/008
Inventor M.维尔纳
Owner MAN ENERGY SOLUTIONS SA