Pneumatic internal combustion hybrid engine

Abstract

The invention relates to a dynamic engine and aims at providing a pneumatic internal combustion hybrid engine. The engine comprises at least one pneumatic motor, at least one internal combustion engine and a high-pressure air tank, wherein the outlet pipeline of the high-pressure air tank is connected to the air inlet pipe of the pneumatic motor through a check valve and a pressure regulating mechanism; the air inlet pipe of the internal combustion engine is respectively connected with the exhaust pipe of the pneumatic motor and an air inlet; and a pneumatic motor crankshaft and an internal combustion engine crankshaft are connected in a sub-crankshaft mode through a crankshaft coupling mechanism. The hybrid engine provided by the invention has the advantages that air can be exhausted by fully utilizing the high pressure and lower temperature of the pneumatic motor, a supercharging effect can be formed for the internal combustion engine, and the size of the intercooler of the air intake system of the internal combustion engine can be reduced appropriately; and the pneumatic motor and the internal combustion engine are connected in a sub-crankshaft coupling mode so as to output motive power externally, thus the pneumatic motor and the internal combustion engine can operate on the respective optimal regions.

Description

technical field [0001] The invention relates to a power engine, in particular to a pneumatic internal combustion hybrid engine. Background technique [0002] Traditional automobiles widely use internal combustion engines as power, consume a large amount of oil resources, and emit a large amount of polluting exhaust gas, which seriously endangers human health. As a power mode with energy-saving, environment-friendly and easy-to-implement technology, HEV has received more and more attention. Research has found that a large amount of low-temperature, high-pressure gas will be emitted during the working process of the pneumatic engine. If it is directly discharged into the atmosphere, this part of energy will be wasted. [0003] Chinese patent application "hybrid engine" (200710067863.0) proposes that the pneumatic and internal combustion working cylinders are the same working cylinder, and a heat exchanger is arranged between the compressed air intake pipe and the internal com...

AI Technical Summary

Problems solved by technology

This patent utilizes the energy of high-pressure gas by means of two-stage expansion, but does not use the exhaust gas of the pneumatic motor to pressurize the internal combustion cylinder, and the pneumatic cylinder and the internal combustion cylinder adopt the same crankshaft method, and the two rotate at the same speed. The optimum region of the engine is at low speed, while the optimum region of the internal combustion engine is at medium and high speeds. The common crankshaft method cannot make the pneumatic cylinder and the internal combustion cylinder in the best operating conditions at the same time

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