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ENGINES OF FUEL OF NATURAL GAS WITH VARIABLE COMPRESSION RATIO
ENGINES OF FUEL OF NATURAL GAS WITH VARIABLE COMPRESSION RATIO
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机译：压缩比可变的天然气燃料发动机
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摘要
The present invention relates to an engine for a natural gas vehicle, and more particularly, to a natural gas vehicle engine for improving the output of the engine by adjusting the height of the crankshaft to increase the compression ratio at low and medium speeds. The crankshaft 12 is attached to the cylinder 10, the piston rod 14 of one end is connected to this crankshaft 12, and the piston 16 is connected to the other end of the piston rod 14, and the cylinder 18 is carried out. In a vehicle engine in which the crankshaft 12 is driven to rotate by an explosion force generated therein, the upper and lower bearing caps 20 and 21 supporting both ends of the crankshaft 12 are cylinder blocks 10. ) And the guide part 10B of the oil pan 11 so as to be movable upward and downward, and form a piston chamber 30 having input and output ports 30A and 30B below the lower bearing cap 21. And a crank shaft connected to the lower bearing cap 21 in the piston chamber 30. The piston 40 is slidably installed and the directional control valve 50 is connected to the input and output ports 30A and 30B of the piston chamber 30 so that the piston is operated by the hydraulic oil of the hydraulic pump P. It is made by installing the compression coil spring 60 to make the movable 40 and the upper bearing cap 20 to press the upper bearing 20 downward with a predetermined force. do.
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