Patent ID: 6016655
Filing Date: 2000-01-25
Classification: F02M,Y02T

Abstract:
An internal combustion engine, comprising:a charge forming device, a combustion chamber, an enclosed intake passage communicating the charge forming device with the combustion chamber, the intake passage providing a conduit for the flow of an intake charge stream from the charge forming device to the combustion chamber, the combustion chamber including structure for combusting the charge stream to produce a stream of products of combustion, a side wall defining an exhaust passage having an upstream end communicating with the combustion chamber and an opposite downstream end, the exhaust passage being adapted for receiving the stream of products of combustion from the combustion chamber through the upstream end and discharging the stream from the downstream end, a member disposed and movable for regulating flow of the stream of products of combustion from the combustion chamber to the exhaust passage, the side wall including an orifice therein positioned in communication with the exhaust passage such that the stream of products of combustion will flow over the orifice and produce suction therein towards the exhaust passage, an opening at another location positioned in communication with the exhaust passage such that back pressure in the exhaust passage generated at a location in the exhaust passage downstream of the opening and flowing towards the upstream end can enter the opening, and a connecting passage communicating the orifice with the opening, wherein suction produced in the orifice will be communicated through the connecting passage to the opening and along with any back pressure that enters the opening will cause some of the stream of products of combustion to be drawn into the opening, pass through the connecting passage and orifice and re-enter the exhaust passage along with the back pressure.