Fire leading channel of rotor engine

Abstract

The invention provides a fire leading channel of a rotor engine. The fire leading channel comprises a fire leading channel body. The fire leading channel body is arranged in a sparking plug installation hole in a cylinder body of the rotor engine and penetrates through the sparking plug installation hole. The fire leading channel body comprises two perpendicular grooves in the profile of the cylinder body, wherein one groove is parallel to the movement direction of airflow in the cylinder body of the rotor engine. The perpendicular grooves each comprise a rear wall face and a front wall face, wherein the rear wall face is an end face opposite to the airflow direction, the front wall face is an end face facing the airflow direction, the rear wall face and the front wall face are circular arc faces, and the circular arc diameter of the rear wall face is larger than that of the front wall face. According to the fire leading channel, a cyclone can be formed in the channel, flame is stabilized, fuel is sufficiently combusted, a heating piece achieves a heating effect to increase the temperature in the channel, liquid fuel is rapidly evaporated, and combustible mixed gas is rapidly formed.

Description

technical field [0001] The invention relates to the field of power machinery and the field of rotary engines, in particular to a fire channel of a rotary engine. Background technique [0002] The development of the economy and the automobile industry has brought earth-shaking changes to our lives. As the core component of a car, the engine has strict requirements on the engine, no matter in terms of performance or the degree of impact of its emissions on the environment. As a new type of engine, the rotary engine has the advantages of simple structure, high power-to-weight ratio, and stable operation compared with traditional reciprocating engines. Therefore, the rotary engine has received more and more attention from the outside world. [0003] However, the special movement mode of the rotary engine makes it present the following two characteristics: First, the airflow in the cylinder moves with the direction of rotation of the rotor, that is to say, the airflow inside th...

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Problems solved by technology

Second, the long and narrow combustion chamber structure leads to a large airflow velocity near the spark plug at the moment of ignition

[0004] The above two characteristics of the rotary engine will lead to the following three defects in its working process: First, the high flow rate near the spark plug makes the ignition energy easily taken away by the high-speed airflow, and the loss of ignition energy will further make the ignition difficult to succeed

In order to improve the stability of the ignition and make the ignition successful, it is necessary to install a more powerful ignition system to make up for it, which will increase the cost of the engine

Second, because the airflow in the cylinder is characterized by one-way flow, and the direction of this one-way flow is from the rear of the combustion chamber to the front of the combustion chamber, which leads to the flame after successful ignition being easily brought to the front of the combustion chamber Department, unable to maintain near the spark plug

This will prevent the fuel in the rear of the combustion chamber from being ignited in time, and the incomplete combustion will increase the amount of unburned hydrocarbons in the exhaust

Third, for some fuels with low volatility, such as heavy oil, aviation kerosene, etc., due to the poor volatility of the fuel and the lack of sharply changing eddies and tumbles in the cylinder, it is difficult to form a combustible mixture near the spark plug, which leads to fuel Less easily ignited and less stable combustion

However, there are two problems caused by this circular passage: first, the airflow in the combustion chamber is not easy to enter the circular passage, which leads to the inability to form a sufficient concentration of mixed gas near the spark plug and make it difficult to ignite successfully

Second, the wall temperature of the circular channel is not high, which is very unfavorable for the ignition of some difficult-to-volatilize liquid fuels

The traditional circular spark plug channel is not conducive to the flow of air into the channel, and is not conducive to the rapid evaporation of fuel

This further exacerbates the shortcomings of the rotary engine's difficulty in ignition and low combustion efficiency

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