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Electrically controlled dual-fuel automobile engine system refitted from mechanical diesel engine

A dual-fuel vehicle and engine system technology, applied in the direction of machine/engine, engine control, electrical control, etc., can solve the problem that engine power, fuel economy and emission performance are difficult to achieve high, distribution control accuracy is not high, and the realization cycle Shortage and other problems, to achieve the effect of avoiding poor fuel economy, avoiding high total hydrocarbon emissions, and shortening the conversion cycle

Inactive Publication Date: 2003-06-18
TSINGHUA UNIV
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Problems solved by technology

The mechanical dual-fuel system has less changes to the existing diesel vehicles, and the implementation period is shorter and the cost is lower. However, the precision of the distribution control of the amount of diesel and natural gas is not high, and the flexibility to change with the operating conditions of the vehicle is poor. , the power, fuel economy and emission performance of the engine are difficult to reach a high level

Method used

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  • Electrically controlled dual-fuel automobile engine system refitted from mechanical diesel engine
  • Electrically controlled dual-fuel automobile engine system refitted from mechanical diesel engine
  • Electrically controlled dual-fuel automobile engine system refitted from mechanical diesel engine

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Embodiment Construction

[0028] Describe in detail below in conjunction with accompanying drawing the system composition of the present invention, operating principle, electric control management method and best embodiment: this system is to increase the natural gas intake system, electronic control unit 1, sensor in the engine system of former mechanical type diesel vehicle The signal acquisition system and the linear electromagnet 2 for controlling oil volume and the linear electromagnet 14 for controlling natural gas. The natural gas intake system includes a natural gas storage cylinder 15, a manual safety valve 11, a high-pressure barometer 5, an electromagnetic safety valve 6, a natural gas filter 7, a natural gas pressure reducer 8, a natural gas intake valve 3, and an air filter 4 and the natural gas pipeline 10 that connects these parts, and above-mentioned each parts are all correspondingly fixed on the car body. The high-pressure compressed natural gas (about 20Mpa) in the natural gas storag...

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Abstract

The engine system of electrically-operated dual-fuel automobile modified by using mechanical diesel oil vehicle is characterized by adding natural gas feeding system, electric control unit, sensor signal acquisition system and two linear electromagnets on the mechanical diesel oil vehicle. Said invention can reasonably use two kinds of fuels, improve its tail exhaust gas, possesses good dynamic behaviour and its control system is simple, easy to implement, safe and reliable.

Description

technical field [0001] The invention relates to a diesel vehicle system, in particular to an engine system and an electronic control management method for converting a mechanical diesel vehicle into a dual-fuel vehicle powered by diesel / natural gas. Background technique [0002] As we all know, the exhaust emissions of diesel vehicles are relatively serious, causing great pollution to the atmosphere. In order to solve this problem in the prior art, in addition to improving the technology of the diesel vehicle itself, using natural gas to replace part of the diesel oil is a more effective way. The principle is to inject diesel into the cylinder to make it compressed and self-ignite, and then ignite the mixture of natural gas and air that subsequently enters the cylinder. This kind of technology will have great potential for reducing vehicle exhaust emissions, so diesel / natural gas dual-fuel vehicles are being further researched and applied by people in the prior art. For ex...

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Application Information

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IPC IPC(8): F02D19/00F02D41/26
Inventor 欧阳明高童毅李希浩周明张武高
Owner TSINGHUA UNIV
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