Variable-mode engine suitable for gas and liquid two-phase fuel
An engine and gas fuel technology, applied in the field of gas-liquid two-phase fuel engines, can solve problems such as temperature rise, engine mechanical structure damage, and machine vibration
Inactive Publication Date: 2020-06-16
HARBIN ENG UNIV
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Problems solved by technology
[0005] The applicable compression ratio of the fuel needs to match the compression ratio of the engine. The compression ratio of the engine is lower than the applicable compression ratio of the fuel, and the combustion of the fuel will be retarded and cannot be fully burned to perform work. The compression ratio of the engine is higher than the applicable compression ratio of the fuel, and the temperature in the cylinder will rise rapidly. High, the machine vibrates violently, which may easily cause damage to the mechanical structure of the engine
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Embodiment Construction
[0017] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0018] combine Figure 1-3 , the present invention is a variable mode engine suitable for gas-liquid two-phase fuel, comprising an intake pipe 7, an exhaust pipe 1, a cylinder head 4, a cylinder liner 9, a piston 10, variable connecting rods 11-15, a crankshaft 16, Electronic control unit 23, signal disc 17, crankshaft position sensors 18, 19, ignition systems 3, 22, gaseous fuel injection systems 8, 24-30 and liquid fuel injection systems 5, 31-37, etc. This variable mode engine suitable for gas-liquid two-phase fuel has two types: spark plug ignition gas mode and compression ignition fuel mode, which can be switched according to the actual operating conditions of the engine. When the engine is in a stable working condition, the spark plug ignition gas mode is used for economical mode, and the engine is in large The compression ignition fuel mode power mode is u...
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The invention aims at providing a variable-mode engine suitable for gas and liquid two-phase fuel. The engine is provided with an ignition plug ignition gas mode and a compression ignition fuel oil mode, according to an actual running condition of the engine, switching is carried out, when the engine is in the stable working condition, the ignition plug ignition gas mode is adopted, when the engine is in the large load or instant working condition, the compression ignition fuel oil mode is adopted, the engine can independently run under the ignition plug ignition gas mode or the compression ignition fuel oil mode, according to the characters of burning gas or liquid fuel under the two modes, the length of a connecting rod is changed, the compression ratio is optimized, efficient burning ofthe gas and liquid two-phase fuel can be achieved, through optimized control over a gas fuel spraying system and a liquid fuel spraying system, switching of the fuel and burning modes and the designof the variable-length connecting rod, one engine burns gas fuel or liquid fuel independently, the combustion process is optimized, and the dynamic property, the economy property and the emissions ofthe engine can be improved.
Description
technical field [0001] The invention relates to an engine, specifically an engine with gas-liquid two-phase fuel. Background technique [0002] With the improvement of the quality of life and the popularization of automobiles, the current problems of energy consumption and environmental damage are becoming more and more serious. The rapid consumption of fossil fuels has gradually attracted attention to the development of alternative energy sources, such as natural gas and petroleum gas. Natural gas and petroleum gas have abundant reserves in nature. The advantages of the two as alternative energy sources are: the main component of natural gas is methane (CH4), the combustion products are mainly carbon dioxide and water, and the carbon-hydrogen ratio of natural gas is lower than that of gasoline and diesel oil. The amount of carbon dioxide is less, which is conducive to slowing down the greenhouse effect, and natural gas does not contain sulfur elements and will not produce po...
Claims
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IPC IPC(8): F02D19/06F02D19/08
CPCF02D19/0647F02D19/0681F02D19/0676F02D19/081F02D19/0602Y02T10/30
Inventor 杨立平杨辉宋恩哲姚崇王立媛
Owner HARBIN ENG UNIV