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Method, fuel injection control system and fuel injection system for dual fuel diesel engine

A fuel injection and diesel engine technology, applied in the direction of fuel injection control, engine control, electrical control, etc.

Active Publication Date: 2019-05-10
WARTSILA FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases it can only be used to operate the engine long enough to set a safe and controlled shutdown

Method used

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  • Method, fuel injection control system and fuel injection system for dual fuel diesel engine
  • Method, fuel injection control system and fuel injection system for dual fuel diesel engine
  • Method, fuel injection control system and fuel injection system for dual fuel diesel engine

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Embodiment Construction

[0019] image 3 A fuel injection system is shown schematically, part of which is a fuel injection control system. These systems are intended for use in dual fuel diesel engines, and since these systems are essentially the same for each cylinder, it is sufficient to discuss the fuel injection system and fuel injection control system here for one cylinder of the engine.

[0020] The first electrical control system 311 is configured to control operation of the first liquid fuel injector 301 , which is an electrically controlled injector. The second electronic control system 312 is configured to control the operation of the second liquid fuel injector 302 , which is also an electronically controlled injector. The first electrical control system 311 and the second electrical control system 312 may be referred to as CCMs, or cylinder control modules. The first electrical control system 311 and the second electrical control system 312 are functionally in the sense that the correct ...

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PUM

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Abstract

A method for controlling a dual fuel diesel engine, a fuel injection control system and a fuel injection system, the method comprising the steps of: using a first electrical control system (311) to control the injection of liquid fuel through a first liquid fuel injector (301) to the cylinders of said diesel engine, using a second electric control system (312) to control the injection of liquid fuel into said In said cylinder of a diesel engine, gaseous fuel is injected into said cylinder of said diesel engine in a gaseous fuel mode (402), and injection to said cylinder is performed by said second liquid fuel injector (302). fuel injection, and - in case of failure of pilot injection via said second liquid fuel injector (302), a gaseous fuel backup mode (423), in which said first liquid fuel fuel injector (301) to perform pilot injection to the cylinder.

Description

technical field [0001] The present invention generally relates to the technology of dual fuel diesel engines that can burn both liquid and gaseous fuels. In particular, the present invention relates to the manner in which the injection of various fuels into cylinders of an engine is performed and controlled under abnormal conditions such as injector failure. Background technique [0002] Dual fuel diesel engines can use both liquid fuels, such as fuel oil, as well as gaseous fuels, such as natural gas. Ensuring reliable operation of the engine requires some precautions against abnormal situations where normal injection of either gaseous or liquid fuel into the cylinders cannot be achieved. [0003] figure 1 A prior art fuel injection system for one cylinder of a dual fuel diesel engine is shown schematically. Gaseous fuel may be injected into the cylinder by electrically controlling gaseous fuel injector (or valve) 101 . Liquid fuel may be injected into the cylinders by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/22F02D41/30F02D19/06F02D19/10F02B3/06
CPCF02D19/061F02D19/0615F02D19/0623F02D19/0692F02D19/105F02D41/0025F02D41/22F02D41/3094F02B3/06F02D2041/224Y02T10/30
Inventor 弗雷德里克·奥斯特曼J·罗斯格恩T·贝尔罗特
Owner WARTSILA FINLAND OY