Dual-fuel modified system

A dual-fuel, supply system technology, applied in the direction of charging system, oil supply device, combustion engine, etc., can solve the problems of high cost and cumbersome transformation process, etc.

Active Publication Date: 2013-09-25
YANTAI JEREH OILFIELD SERVICES GROUP
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Problems solved by technology

The transformation cost is relatively high, and the transformation process is cumbersome
In addition, at present, there are few domestic dual-fuel retrofit systems for large diesel engines above 1000KW

Method used

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  • Dual-fuel modified system

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Embodiment Construction

[0032] The invention discloses a dual-fuel refitting system. The dual-fuel refitting system only adds a natural gas main pipeline, a mixer, a sensor group and a control system on the basis of the original diesel engine, and does not modify the original diesel engine body and the original diesel engine. The ECU of the engine undergoes a large-scale transformation, the transformation process is simple, and the transformation cost is low, thus improving the feasibility of large-scale diesel engine transformation.

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative ...

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Abstract

The invention discloses a dual-fuel modified system. A natural gas supply system comprises a natural gas main pipeline, a mixer, a sensor set and a control system. The control system is in communication connection with the sensor set and an electromagnetic switch valve in the natural gas main pipeline. The dual-fuel modified system is started under the mode of diesel oil. When operation signals transmitted by the sensor set are within a preset range, the control system controls the electromagnetic switch valve to be opened, and when the operation signals transmitted by the sensor set are beyond the preset range, the control system controls the electromagnetic switch valve to be closed. According to the dual-fuel modified system, the natural gas main pipeline, the mixer, the sensor set and the control system are arranged on the basis of an original diesel engine, the original diesel engine and an ECU of the original diesel engine are not modified largely, the modifying process is simple, the modifying cost is low, and therefore the feasibility for modifying the large-scale diesel engine to the dual-fuel modified system is improved.

Description

technical field [0001] The invention relates to the technical field of engines, and more specifically relates to a dual-fuel refitting system. Background technique [0002] Natural gas is used as the energy fuel of the engine. Compared with gasoline and diesel, natural gas is cheap, runs smoothly, has low noise, and does not deposit carbon. At present, domestic dual-fuel equipment is mainly aimed at automobiles. The improved dual-fuel equipment depressurizes CNG (compressed natural gas) cylinders and injects natural gas into the engine. The dual-fuel equipment has a large change to the original engine, and the engine needs to be disassembled for modification and calibration experiments. The transformation cost is relatively large, and the transformation process is cumbersome. In addition, currently there are few domestic dual-fuel refitting systems for large diesel engines above 1000KW. [0003] Therefore how to design a kind of dual-fuel retrofitting system, this dual-fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02F02D19/08
CPCY02T10/30
Inventor 柳雨箫孙任伯刘凯深
Owner YANTAI JEREH OILFIELD SERVICES GROUP
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