Importance

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Abstract

A regulator for an internal combustion engine having at least one working cylinder space is disclosed. The regulator comprises a housing for connection to the engine and a rotary slide valve rotatably mounted in the housing to rotate on a rotation axis. The rotary slide valve has at least one passageway for alternatively connecting the cylinder working space with intake and discharge channels in the housing as the valve is rotated in the housing. Cooling means are also provided for cooling the rotary slide valve. The cooling means includes a coolant fluid inlet in the valve into which coolant fluid is introduced at a first radial position with respect to the rotation axis, and first and second cooling channel portions for conducting the coolant fluid through the rotary slide valve. The first cooling channel portion extends from the inlet to a second radial position located further from the rotation axis than the first radial position and the second cooling channel portion extends from the radial position to a third radial position located radially inward of the second radial position so that coolant is first conducted from an interior part of the valve radially outward to an exterior part of the valve and then is conducted radially inward into an interior part of the valve.

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First Claim