JP2015098835A - Ignition method of wankel type rotary engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it is desired to prevent a compression gas from being leaked by an ignition plug hole of a rotary engine and it is desired to implement ignition in a combustion chamber.SOLUTION: In a conventional Wankel type rotary engine, since a center electrode and a ground electrode are integrated, an ignition plug is installed within an ignition plug hole of a housing (1) and this cannot be disposed in a combustion chamber structurally for the rotary engine. In order to solve this problem, two electrodes are separately mounted on an inner peripheral surface of the housing, a conductor (8) installed in a combustion chamber (6) of a rotor (5) is interposed between a center electrode (3) and a ground electrode (13) and discharged, such that an electric circuit is created. Thus, discharging can be performed in at least two parts near the combustion chamber, the need of the ignition plug hole is eliminated, and compression gas leakage is also prevented.

Description

The present invention relates to a technique of a bankel type rotary engine ignition method.

The conventional rotary engine spark plug has a single pole and discharges to ignite the air-fuel mixture. Therefore, the spark plug hole in the housing prevents the apex seal at the top of the rotor from touching the spark plug electrode. Must be provided.

There is a compressed gas leak when the apex seal passes through a spark plug hole larger than the width of the apex seal. Ignition starts from the inside of the spark plug and passes through the spark plug hole until it explodes in the combustion chamber. This is disadvantageous for high-speed rotation.

Since the conventional spark plug has a single pole and can be discharged only in the spark plug hole, it is desired to discharge this near the combustion chamber to shorten the time to explosion.

I want to keep airtight even if the apex seal passes the spark plug position.

The center electrode and the ground electrode of the conventional spark plug are separated, and an electrode surrounded by an insulator (2) at or near the top dead center of the inner peripheral surface of the housing (1) is passed through from the inner peripheral surface of the housing to the outside. This is the central electrode (3), and the inner shape of the housing is aligned with the inner peripheral surface of the housing so that the compressed gas does not leak when the apex seal (4) passes as much as possible.

In the same manner, the ground electrode (13) is attached side by side, that is, parallel to the rotation axis.

At the position where one end of the conductor (8) fixed to the combustion chamber (6) of the rotor (5) via the insulator (7) is discharged to the center electrode (3) and the other end to the ground electrode (13) It arrange | positions facing the gap which can be discharged.

  Moreover, if this conductor is cut at an appropriate place in the combustion chamber (6) to provide a dischargeable gap, ignition can be assisted from there.

Schematic configuration diagram as one embodiment of the present invention A-A cross section Rotor top view

The shape of the center electrode (3) and ground electrode (13) on the inner peripheral surface of the housing (1) is not a point, but is a rectangle that is long in the direction of rotation using the electrode width shown in Fig. 1 in accordance with the shape of the housing. 3 and 13), and if the length of the conductor facing this is the same as the conductor (8) in the combustion chamber (6) in Fig. 1, the change in the discharge gap due to rotation is reduced. The discharge timing and discharge duration corresponding to the rotation speed can be adjusted.

If the discharge mark is acceptable, the housing ground electrode (13) is not provided and the housing surface itself is used as the ground electrode, or if only the center electrode (3) is discharged, the rotor (5) itself is grounded. Current from the gear (9) through the stationary gear (10), apex seal (4), side seal (11), corner seal (12) and so on.

    1 Housing 2 Insulator 3 Center electrode 4 Apex seal 5 Rotor 6 Combustion chamber 7 Insulator 8 Conductor 9 Rotor gear 10 Fixed gear 11 Side seal 12 Corner seal 13 Ground electrode

Claims (1)

In the ignition method of a Wankel-type rotary engine, an electrode surrounded by an insulator is attached so as to penetrate from the inner peripheral surface of the housing to the outside at or near the top dead center of the inner peripheral surface of the housing. One end of a conductor fixed to the combustion chamber of the rotor is disposed opposite to the center electrode with a dischargeable gap at a position where discharge is desired.

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