Heat energy recovery internal combustion engine

Abstract

The invention provides a heat energy recovery internal combustion engine. The device comprises a combustion chamber, an air inlet channel, a spark plug, an air pressure supplementing cavity and a hydrogen inlet channel. According to the internal combustion engine, in the air inlet process of the air piston, hydrogen exhausted by the vehicle-mounted fuel cell is synchronously injected into the combustion chamber through the hydrogen inlet channel, so that the hydrogen is mixed with gasoline; and at the later stage of the air inlet process of the air piston, part of mixed gas in the combustion chamber is pumped out through suction of the piston in the air pressure supplementing cavity and temporarily stored in the air pressure supplementing cavity to serve as supplementary fuel in the acting combustion process of the combustion chamber. After the piston reaches the peak position of the compression stroke, the mixed gas is supplemented into the combustion chamber until the spark plug ignites to block the air pressure adjusting hole so as to trigger the combustion chamber to ignite the mixed fuel under high pressure, so that the conversion efficiency of the fuel is improved, and the acting of the internal combustion engine in the single stroke is improved.

Description

technical field [0001] The present application relates to the technical field of driving new energy vehicles, in particular to a heat recovery internal combustion engine. Background technique [0002] Most existing new energy vehicles use lithium batteries as energy storage devices to supply electric energy. However, the internal electrical connection structure of a large-capacity lithium battery pack is prone to open circuit or even short circuit due to external bumpy roads or changes in ambient temperature during vehicle driving, resulting in electric sparks and even fire and explosion due to chemical substances in the battery in extreme cases. [0003] Existing on-board fuel cell technologies typically use hydrogen as the reactant gas. In this way, a conversion device for residual hydrogen needs to be specially designed in the vehicle exhaust system to avoid potential safety hazards caused by hydrogen leakage. In addition, although hydrogen has the advantages of light s...

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Problems solved by technology

In addition, although hydrogen has the advantages of light specific gravity, high conversion efficiency, and harmless reaction products, the hydrogen leaked from the existing vehicle-mounted fuel cells cannot be extracted separately for storage or transferred to other equipment, so the existing vehicle-mounted fuel cells are not actually used. Hydrogen energy is not fully utilized, and its actual conversion efficiency is not high

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