Online fuel reforming variable-combustion-mode engine and control method

A combustion mode and engine technology, applied in the direction of engine control, combustion engine, internal combustion piston engine, etc., can solve the problem of no detailed description of the combustion mode, and achieve the effects of avoiding easy ignition, loose composition requirements, and cost saving

Active Publication Date: 2016-11-30
DALIAN UNIV OF TECH
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Problems solved by technology

The "Reforming Ethanol Engine" patent (ZL201080038253.8) applied by Monsanto Technology Company in 2010 provides the idea of ​​fuel reforming, but the combustion mode after fuel reforming is not described in detail

Method used

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  • Online fuel reforming variable-combustion-mode engine and control method

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Embodiment Construction

[0014] specific implementation plan

[0015] The system composition, component connection relationship and specific control method of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] An online fuel reforming variable combustion mode engine, comprising an air inlet 1, a gas pipeline 2, a solenoid valve 3, a syngas fuel tank 4, a heat exchanger 5, a reforming reaction chamber 6, a gas compressor 7, two Methyl ether fuel tank 8, engine combustion chamber 9, exhaust gas pipeline 10, turbine 11, filter 12, exhaust port 13.

[0017] The air inlet 1 is connected to the gas pipeline A 2-1, and the gas pipeline A 2-1 is provided with a solenoid valve a 3-1 and connected to the combustion chamber 9 of the engine. The syngas fuel tank 4 is respectively connected with the gas pipeline B 2-2 and the gas pipeline C 2-3, the gas pipeline B2-2 is provided with a solenoid valve b 3-2, and the gas pipeline C 2-3 is pr...

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Abstract

The invention discloses an online fuel reforming variable-combustion-mode engine and a control method, and belongs to the technical field of engine low-temperature combustion. Synthesis gas serves as a fuel source, and dimethyl ether fuel is prepared through tail gas energy reforming. In cold start, a dimethyl ether direct injection mode is adopted; under a medium or low load, a dual-fuel combustion mode of premixed compression ignition of dimethyl ether and synthesis gas is adopted; under a medium or high load, a combustion mode that dimethyl ether serves as ignition fuel to ignite synthesis gas is adopted. Smooth switching of a traditional diffusive combustion mode, a homogeneous gas mixture compression ignition mode and a reactivity-controllable compression ignition mode is achieved through fuel control over synthesis gas and dimethyl ether. According to the online fuel reforming variable-combustion-mode engine and the control method, switching of multiple combustion modes is achieved through the single fuel source, the efficient and clean internal combustion engine design concept is achieved, the effects of improving the heat efficiency of the engine and reducing the energy consumption of the engine are achieved by switching the combustion modes under different working conditions, and meanwhile emission of NOx and soot is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of engine low-temperature combustion, and relates to an engine device and method for an online fuel reforming variable combustion mode engine. Background technique [0002] Under the international environment of energy crisis and environmental pollution, the main development directions of internal combustion engines are divided into two aspects: the utilization of alternative fuels and the advanced combustion methods of internal combustion engines. Among the alternative fuels, syngas has a wide range of sources, low manufacturing cost, and can realize efficient and clean combustion of internal combustion engines, so it has great application prospects. In syngas, H 2 As the main fuel gas, it has the characteristics of fast combustion speed and flame propagation speed, which makes the temperature in the ignition engine cylinder too high, resulting in the deterioration of NOx emissions. Therefore, the advance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D19/06F02D19/08F01N5/02F02B43/10
CPCF01N5/02F02B43/10F02D19/0647F02D19/081F02D19/082F02D19/10Y02T10/12Y02T10/30
Inventor 贾明徐震
Owner DALIAN UNIV OF TECH
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