Pressure washer engine idle controller

摘要

An engine idle controller for an engine driven pressure washer. The pressure washer delivers high pressure water from a pump through the idle controller to a conventional wand which includes a manually operated, normally closed flow control valve and a spray nozzle. When the wand valve is opened, a resulting pressure drop between two chambers in the flow controller acts on a piston to move the engine throttle to a full throttle position. When the wand valve is closed, the pressures in the chambers equalize and the piston is moved to a position to set the engine throttle to an idle position.