Abstract: Gas recirculation into engine combustion chambers is controlled to a constant ratio with respect to the amount of induction air despite wide variations in manifold vacuum.

Abstract: An exhaust gas recirculation system comprises an exhaust gas flow control valve; a vacuum actuator for operation of the flow control valve; and a control apparatus constructed and arranged such that an output vacuum of the control apparatus applied to the vacuum actuator is an amplification of the venturi vacuum modified by the intake manifold vacuum.

Abstract: A two part variable compression ratio (VCR) piston assembly having an outer member movable relative to an inner member to vary the compression ratio of an internal combustion engine and a hydraulic system utilizing oil from the lubrication system of the engine for automatically controlling the relative movement of the members to maintain a predetermined maximum combustion chamber pressure. A hydraulic circuit includes an upper and a lower chamber which expands and contracts conversely upon relative movement of the piston members and a system for supplying oil to the upper chamber and to the lower chamber via the upper chamber and for discharging the oil from the upper chamber in a manner which gradually changes the compression ratio of the piston until a predetermined maximum combustion chamber pressure has been achieved and which tends to maintain the maximum combustion chamber pressure after it has been achieved.

Abstract: An internal combustion engine has a main combustion chamber and an auxiliary combustion chamber which is connected to the main combustion chamber by way of a torch nozzle. A main carburetor communicates with the main combustion chamber to supply a large amount of lean combustible mixture, and an auxiliary carburetor communicates with the auxiliary combustion chamber to supply a small amount of rich combustible mixture. A rotary valve is disposed within the auxiliary carburetor downstream of its venturi section. The cross sectional area of an opening of the rotary valve is smaller than that of the venturi section.

Abstract: An igniting apparatus for internal combustion engines comprises a central igniting electrode disposed at the position adjacent to an opening communicating, between an auxiliary combustion chamber and a main combustion chamber, an earthed electrode consisting of an inner circumferential portion in close to the opening and an electric source means supplying discharge voltage between both the electrodes, whereby lean mixture can be easily ignited and the electric source means has a sufficient discharge duration to energize the mixture and combustion gases passing said opening.

Abstract: A fuel injection pump for Diesel engines comprises a plunger unit in the pump body, a delivery valve, and an injection-quantity control mechanism in the pump body between the plunger unit and delivery valve. The control mechanism has a piston slidable in the pump body and communicated with the plunger unit and delivery valve and also has an injection-quantity control member coaxial with the piston and axially adjustable in position to press the piston against the pump body with the aid of a spring on the other end of the piston. The lift limit distance of the piston to be adjusted by the injection-quantity control member is preset to a range not less than that obtained by dividing the quantity of fuel to be injected at the engine start by the cross sectional area of the piston.

Abstract: The improvement in a combustion engine of the conventional type includes air inlet means disposed in the vicinity of an end of the cylinder facing away from the spark plug for receiving air into the cylinder, and a first plate attached to the cylinder in the vicinity of that end. The first plate is attached to the cylinder and formed with first and second openings for the cylinder and air to pass therethrough, respectively. A second plate, which fits into the cylinder is attached to the piston in the vicinity of an end portion of the latter facing the spark plug, and is formed with a third opening for passing air therethrough. Piston-and cylinder-rings slide between the first plate and the cylinder end, and between the second plate and the end portion of the piston, respectively, for a timed control of the air received into the cylinder through the air inlet means.

Abstract: Improvements in or relating to explosion internal-combustion engines are disclosed, wherein a barrier is formed and divides the variable volume of the combustion chamber into two spaces or compartments communicating with each other for at least a fraction of the cooperation time between cooperating surfaces of the piston and the stationary portion of the variable volume chamber, these cooperating surfaces forming said barrier.

Abstract: A reaction carburetor for an internal combustion engine which operates to catalytically convert fuel from the liquid to the gaseous state for improved combustion. According to the invention, means are provided for stabilizing the flow of fuel and air in the carburetor. The stabilizing means include at least one temperature-stable body, arranged in the fuel-air flow path ahead of the catalyst, having a plurality of flow channels extending therethrough in the direction of the flow path.

Abstract: Disclosed herein is an internal combustion engine (and a method of operation thereof) comprising a piston movable relative to a combustion chamber and to a crankcase to effect cyclical pressure variation in the crankcase in response to piston movement, a transfer passage for introducing fuel-air mixture into the combustion chamber from the crankcase in response to cyclical crankcase pressure variation, an auxiliary chamber separate from the transfer passage, and a port arrangement for providing the auxiliary chamber with pressurized air in response to cyclical crankcase pressure variation and for initiating communication of the auxiliary chamber with the combustion chamber in response to piston movement during the presence of pressurized air in the auxiliary chamber and at a time other than the time of initiation of introduction of fuel-air mixture into the combustion chamber.

Abstract: A two-cycle engine wherein a pair of pistons are mounted within a pair of cylinders which are arranged in an oppositely facing in-line manner with the connecting rods of both pistons being also in-line and rotatably mounted upon a crank shaft, the crank shaft extending through and rotatably mounted in respect to a planetary gear carrier.

Abstract: An internal combustion engine operated with a gasoline-methanol mixture as fuel comprises a fuel system, a water-absorbing filter and a ventilating line passing through the filter. When moisturized air is flowing through the ventilating line, the filter removes the moisture so that the fuel system is ventilated with dry air.

Abstract: A gas generating system for use with internal combustion engines, to afford hydrogen gas and oxygen gas to be intermixed with the fuel for the engine.It comprises an electrolysis unit which is energized by the existing electrical system normally associated with an internal combustion engine, such unit utilizing distilled water and Sodium Hydroxide as the electrolyte. The system further includes means for conducting ambient air into the electrolysis unit for agitating or mixing the electrolyte and removing the gases that accumulate on the anode and cathode. The unit comprises a stainless steel tank as well as stainless steel anode and cathode members.

Abstract: A swirl chamber type combustion chamber for an internal-combustion engine is divided into a main combustion chamber and a swirl chamber connected through a passageway with the main combustion chamber. The main combustion chamber includes a clearance part defined between a cylinder head and a piston of the engine, a concavity or piston chamber provided in the upper surface of the piston, and an air reservoir.The air reservoir is preferably provided in portions of the piston upper surface where the concavity of the main combustion chamber is not present. It is preferable, but not essential, that the air reservoir have a suitable number of holes with a diameter-deepness ratio of 1 to 4 arranged symmetrically with respect to the concavity so that a line connecting the centers of the piston and each hole makes an angle of substantially 30.degree. to 120.degree. with a longitudinal center line of the concavity.

Abstract: An engine with a main combustion chamber, an auxiliary combustion chamber and a torch-nozzle interconnecting the main and auxiliary combustion chambers, comprises an auxiliary inlet valve that is operated by a rocker arm for operating a main inlet valve and a cylindrical wall positioned downstream of the valve seat of the auxiliary inlet valve to prevent an auxiliary induction passageway from being opened until the valve head of the auxiliary inlet valve has been lifted beyond a predetermined point.

Abstract: The invention relates to an internal combustion engine having a turbine-compressor combination connected with the outlet duct for pressure filling by the thrust system; the invention has for its object to improve the shape of the high and steep peak of the exhaust pulse occurring particularly in engines having a high mean effective pressure so that the abrupt gas pulse is smoothed down so that the turbine is capable of operating with higher efficiency, and provides a combustion engine with pressure filling by the thrust system, the exhaust duct of which includes at least one restriction narrowing the passage area.

Abstract: The present invention relates in general to reducing the internal combustion engine exhaust emission polutants. More specifically, it relates to a control device that regulates the amount of exhaust gas being recirculated into the intake manifold of an internal combustion engine such that the exhaust gas recirculation flow is nearly proportional to engine air flow, and is a controlled function of intake manifold vacuum. The flow may be completely inhibited at low engine temperatures and also at times of low manifold vacuum and high engine air flow in order to maintain acceptable driveability.

Abstract: A valve for controlling the flow of gases, or fluids, which comprises a stationary valve housing having an opening in its face and a movable valve member having a face rotatable, or slidable, over the face of the valve housing and having a port or ports in the face which comes into and out of communication with the opening, there being means to supply liquid lubricant between the valve and housing faces and means capable of reducing the lubricant film thickness between the valve and housing faces in the region of the valve port and its opening into the combustion chamber to from 40 to 50.mu. inches.

Abstract: Exhaust gas from an internal combustion piston engine is recirculated through a rich mixture auxiliary intake passage leading to an auxiliary combustion chamber. A valve controls the relative proportions of exhaust gas and air supplied to the auxiliary intake passage, and the valve is controlled by means responsive to suction pressure downstream from the auxiliary throttle valve, and is also responsive to movement of that throttle valve.

Abstract: An air-to-fuel ratio control means provided in a carbureter of an automobile, in which control means a control valve for controlling the rate of flow of compensating air or compensating fuel is provided. Also, a drive means is provided to fix the control valve at positions at which an optimum air-to-fuel ratio is obtained depending upon the engine operating conditions, namely at the time of cold starting, under low-load low-speed and high-load high-speed engine operating conditions.