Abstract: A muffler disposed close to the atmospheric discharge end of the exhaust system, consisting of an accelerating part (4) which accelerates the exhaust gas flow and a negative pressure chamber (5) which generates negative pressure in association with the acceleration thereof. Said negative pressure acts to connect the negative pressure chamber (5) with the flow-distributing chamber (2) disposed on the exhaust pipe (1) at the upper stream of the silencing part (19) by means of the bypass (9), in order to promote suction of the exhaust gas flow. The flow-distributing chamber (2), which has a larger cross-sectional area than that of the exhaust pipe (1), contains at its center an exhaust port (3) which is opened to the accelerating part (4), and flow-distributing holes (7) that are opened to the bypass (9) in the peripheral area.

Abstract: An apparatus for driving a turbo supercharger (6) of an internal combustion engine (1) including an exhaust gas driven turbine (61) driving a compressor (62) for pressurizing engine intake air wherein a gas suction duct (10) is connected to the outlet (8) of the exhaust gas turbine (61), through which the exhaust gas flowing through the turbine is discharged, thereby sucking the exhaust gas discharged from the turbine and driving the turbine by simultaneous positive and negative pressures. The suction force is produced by a negative pressure generator (5) provided in the exhaust gas conduit (2) downstream of the exhaust gas turbine outlet.

Abstract: Apparatus for driving a turbosupercharger for an internal combustion engine wherein a negative pressure is generated by accelerating the exhaust gas flow. A turbine (40) is driven by the negative pressure generator (30) and a supercharging turbine (50) is operated by the turbine (40), so that as the suction air is pressurized beforehand, the energy of the exhaust gas flow acts on the turbine (40) by connecting the inlet of the turbine (40) to an exhaust system pipe (20). A low-pressure suction air flow acts on the downstream side of the turbine. In this way, the exhaust gas flow discharged to the turbine outlet is absorbed, and the turbine (40) is driven by the energy of the exhaust gas which flows through the exhaust system pipe (20) as well as by suction force of a powerful negative pressure, which is generated separately. A negative-pressure generator (30) is provided at the downstream end of the exhaust system pipe to generate the suction force.

Abstract: The present invention provides a method of and an apparatus for driving a turbosupercharger wherein including an exhaust gas turbine (61) is driven by the exhaust gas energy of an internal combustion engine (1), and a supercharging turbine (62) is actuated driven by the exhaust gas turbine, so as to supercharge the engine with suction intake air; characterized in that suction air wherein exhaust gas, streams of in exhaust pipe (2) generate negative pressure (5) which is connection (10) to the turbine outlet (8) from which exhaust gas streams passed passing through the exhaust gas turbine are emitted, whereby the exhaust gas streams to flow to at the turbine outlet are is drawn off to assist in the driving of by suction, and the exhaust gas turbine is driven under a positive pressure and simultaneously under a negative pressure based on the force of the suction.

Abstract: This invention provides a device for accelerating an exhaust gas stream discharged from the combustion chamber of an internal combustion engine the flow velocity of said gas stream having been lowered under the internal resistance by passing through the exhaust system ducts, machinery and tools such as catalyzers, mufflers interposed in the exhaust gas stream. The exhaust gas stream the flow velocity of which is accelerated through an acceleration portion or portions as much as possible to the flow velocity of the exhaust gas stream discharged immediately after it has been discharged from the combustion chamber is discharged into the air. As a result thereof, the exhausting efficiency can be improved and the exhausting characteristics are stabilized so that the rotational output is stabilized at the time of low-speed driving, and the decrease of the back pressure contributes at the time of high-speed driving so that it has the advantages that the so-called stretching of the rotation becomes better.

Abstract: A negative pressure air stream accelerator for a suction type air cooling mechanism for cooling an internal combustion engine produces negative pressure by accelerating the exhaust gas stream to form a strong negative pressure connected to the cooling device to draw cooling air therethrough, and accelerates the velocity of the exhaust gas by providing at least one stage of acceleration units for throttling by a reduced cross-sectional area of the exhaust gas passage having an outer casing connected to the cooling device, the accelerator having holes through the walls thereof communicating with the interior of the casing. A plurality of stages are provided in series for utilizing the air stream accelerated to a high velocity at the final negative pressure stream.

Abstract: A back pressure generator for affecting torque of an internal combustion engine having an exhaust system comprises a tubular housing, a main passage part for exhaust gas in the housing, a valve body movably supported in the main passage part for movement in response to the force of exhaust gas on the valve body, a valve seat in the main passage part which when engaged by the valve body closes the main passage part, a spring for resiliently urging the valve body towards the closed position having a predetermined force characteristic for moving the valve body into the closed position when the engine is idling and allowing the valve body to move in a direction downstream relative to the exhaust gas flow proportionally in response to the force of the exhaust gas on the valve body to a fully open position, regulating holes in the main passage engageable by the valve body for controlling the flow of exhaust gas through the main passage in response to the position of the valve body, and a separate passage in the hou

Abstract: An air cooling mechanism for an internal combustion engine which has cooling jackets for cooling the internal center of the engine with air, an atmospheric air inlet to the cooling jackets and an air suction unit in the exhaust system for drawing air into the cooling jackets and exhausting air from the jackets and having a structure so that the air is forcibly drawn through the jackets for cooling the engine. The energy for drawing the cooling air is obtained by accelerating the exhaust gas stream and utilizes the intake energy responsive to the power demand of the engine and does not consume power from the engine.

Abstract: A suction type turbo-supercharger (6) is driven by highly negative pressure suction air produced by a negative pressure generator (4) which accelerates the exhaust gas stream of an internal combustion engine (1), external air being drawn by the negative pressure into the suction turbine (61) of the turbo-supercharger (6) to rotate the supercharging turbine (62) coaxial and coupled with the suction turbine (61) to thereby supercharge the air fed into the combustion chamber of the engine. The air stream produced by the negative pressure drives the turbo-supercharger and may also be used to cool the engine, in which case the turbo-supercharger is driven by the air stream after cooling the engine.