Technical realization elements of gasoline engine ignition mechanism including eccentric active pre-chamber

Technical realization elements:

4. The purpose of the present invention is to provide a gasoline engine ignition mechanism including an off-axis active pre-chamber, which solves the problem that the flame in the pre-chamber cannot spread from the center to the surroundings. In order to achieve the above objectives, the present invention provides the following technical solutions:

5. An ignition mechanism for a gasoline engine containing an eccentric active pre-combustion chamber, comprising: a cylindrical connector 1, an injector mounting hole penetrating the upper and lower end surfaces of the connector, and penetrating the upper and lower ends of the connector The spark plug mounting hole on the end face, the pre-chamber 5 connected to the outer peripheral surface of the connecting piece through threads, the pre-chamber injector 4 working with the injector mounting hole, and the pre-chamber spark plug 2 working with the spark plug mounting hole;

6. The pre-combustion chamber is composed of three sections. From top to bottom, there are a first cylindrical sleeve body 10, an eccentric cone-shaped sleeve body 11, and a second cylindrical cavity 12. The inner diameter of the first cylindrical sleeve body passes through the thread Fixedly connected with the outer circumferential surface of the connecting piece, the inner diameter of the second cylindrical cavity is smaller than the inner diameter of the first cylindrical sleeve, and the center lines of the second cylindrical cavity and the first cylindrical cavity do not coincide; the eccentric cone-shaped sleeve is just connected The first cylindrical sleeve and the second cylindrical cavity; the lower end surface of the connecting piece, the inner wall of the eccentric cone-shaped sleeve, and the inner wall of the second cylindrical cavity are enclosed to form a pre-combustion chamber;

7. There are n pre-chamber jet nozzle holes 8 at the lower part of the second cylindrical cavity, and n is an integer greater than or equal to 3;

8. The center line of the injector mounting hole is perpendicular to the upper and lower end surfaces of the connecting piece; the center line of the spark plug mounting hole and the axis of the second cylindrical cavity intersect at the spark plug electrode of the pre-combustion chamber.

9. Preferred solution one, the jet nozzle hole of the pre-chamber is located at the junction of the bottom surface and the circumferential surface of the second cylindrical cavity.

10. In the present invention, the spark plug is located at the center line of the second cylindrical cavity, that is, at the position of the pre-chamber axis, so that the ignition position of the pre-chamber is centered, and the flame surface is more symmetrical to spray jets to each pre-chamber The hole development shortens the time difference between the flame surface and the jet nozzle hole of each pre-chamber, and reduces the asymmetry of the jet time of each pre-chamber jet nozzle.

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