Gasoline engine ignition mechanism comprising pre-combustion chamber with shared jet orifice

Abstract

The invention relates to a gasoline engine ignition mechanism comprising a pre-combustion chamber with a shared jet orifice. The ignition mechanism comprises a cylindrical connecting piece, an oil sprayer mounting hole, a spark plug mounting hole, the pre-combustion chamber connected with the outer circumferential face of the connecting piece through threads, a pre-combustion chamber oil sprayer matched with the oil sprayer mounting hole to work and a pre-combustion chamber spark plug matched with the spark plug mounting hole to work; the pre-combustion chamber is formed by combining three sections, namely a first cylindrical sleeve body, a conical sleeve body and a second cylindrical cavity body in sequence from top to bottom; N evenly-distributed jet flow spraying holes are formed in the center of the bottom of the second cylindrical cavity, the center lines of all the spraying holes intersect with the center line of the second cylindrical cavity, and the intersection points coincide with one another; and all the spraying holes are converged into a spraying opening at the upper bottom surface of the second cylindrical cavity, namely the shared jet orifice. According to the gasoline engine ignition mechanism, the jet flow of flames can be simultaneously carried out by six jet flow spraying openings.

Description

Technical field: [0001] The invention relates to an ignition mechanism of an internal combustion engine, and further relates to an ignition mechanism of a gasoline engine comprising a pre-combustion chamber of a shared jet port. Background technique: [0002] The active pre-chamber engine adopts lean combustion technology to improve the thermal efficiency of the engine. When the mixture in the engine cylinder is too lean, it is easy to cause misfire and misfire. When the local flame spreads slowly, it is more likely to cause knocking. Therefore, the active The jet flame ignition is carried out in the type pre-combustion chamber, and multiple ignition points are formed in the main combustion chamber, so as to ensure the combustion of the lean mixture. [0003] Due to the size limitation of the pre-combustion chamber suitable for gasoline engines, the size of the active pre-combustion chamber in the engine is generally small, and the arrangement of the internal fuel injector a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an active pre-chamber structure with a shared jet inlet design to solve the problem that the flame in the pre-chamber cannot spread to each injection hole at the same time

Images