Abstract: A primer valve for a 2-cycle model engine attached to an accessible portion of the engine to facilitate starting thereof. The valve is provided with direct access to the engine cylinder and with a check valve responsive to the continuous positive internal pressure of the operating engine. A squeeze container is utilized to send a small charge of fuel through the valve into the cylinder.

Abstract: A system of converting a carbureted-spark ignited internal combustion engine to a fuel-injection-spark ignited mode of operation comprising a series of fuel injecting spark plugs for replacing the conventional spark plugs, a fuel manifold for the spark plugs connected to the fuel line in lieu of its connection with the carburetor and a distributor assembly for replacing the distributor cap and rotor of the distributor having a shaft section fixedly connected to the rotor shaft of the distributor, the shaft section having a drum mounted thereon for rotation therewith and for axial movement therealong in response to the movement of the speed control mechanism of the engine (in lieu of the carburetor response thereof), the drum cooperating with a ganged structure in the form of a replacement distributor cap to generate electrical signals resulting from the rotational movement of the drum which are transmitted to the fuel injection plugs as a function of engine speed and are varied in time or other characteristic

Abstract: A snap-on type spring retainer lock comprises a one-piece stamped retainer element which has resilient spring fingers which encircle and clamp against a tapered surface portion of a valve stem. A spring retainer is held on the valve stem by the abutting engagement of the spring retainer with the retainer lock. The retainer lock has a base portion from which the spring fingers project. The base portion is adapted to cover the tip end of the valve stem and acts as a bearing surface for a mechanism for driving the valve.

Abstract: An arrangement for controlling the recirculation of exhaust gases within internal combustion engines, includes a recycling system of conduits connecting the engine exhaust manifold to the main inlet manifold of the carburetion system and having a recirculating valve interposed within such circuit. The obturator of the recirculation valve has a truncated-cone configuration of such design that the increase in the variable area of the opening between the stopper or obturator and its seat is a function of the engine speed and load. In recycling the exhaust gases, the invention serves as an antipollution means for the exhaust gases of internal combustion engines.

Abstract: At least one auxiliary air inlet is provided. The inlet is controlled by at least one valve communicating with the inlet pipe of the engine downstream of a device determining the proportion of air and fuel supplied to the engine, such as a carburettor. The valve is controlled by the vacuum from the proportioning device via a capsule including a diaphragm biased by a spring. The vacuum is modulated by an electromagnetic valve controlled by a sensor positioned in the exhaust pipe. The sensor delivers to the electromagnetic valve an electric current variable as a function of the composition of the burnt gases.

Abstract: An intake system for intercommunicating a carburetor and a combustion chamber of internal combustion engines which has a cylinder head, an intake port provided in the cylinder head, an intake valve located in the intake port and an exhaust manifold communicated with the combustion chamber. At least two intake passages are provided to join together at that part in the intake port which is immediately before the intake valve. One of the intake passages passes through the exhaust manifold, whereby the atomized fuel particles in an air-fuel mixture to be sucked in the combustion chamber can be positively vaporized without accompanying high temperature rising of the mixture.

Abstract: Apparatus and method for use associated with an internal combustion engine whereby drainage of fuel, vapor and oil drainage from the crankcase thereof is recovered and introduced in a metered fashion into the principal fuel line of the engine. A dual-chambered device is employed having an upper chamber connected to the crankcase for accumulating drainage, and a lower chamber serving as a mixing chamber connected in series with the principal fuel line. At the top of the mixing chamber there is mounted a diffuser plate for receiving and dispersing the drainage as it falls from a valve assembly in the drainage chamber directly above. The diffuser plate acts to disperse the drainage in a thin film over the surface of the plate after which the drainage falls off the sides of the plate and mixes readily with the fuel from the principal fuel supply in the mixing chamber. Also provided across the top of the diffuser plate is a channel which acts as a baffle to enhance the mixing action of the drainage with the fuel.

Abstract: A water cooled internal combustion engine with a cooling blower arranged at one end face of the engine and with at least one water cooler which is acted upon by the cooling blower and extends alongside the engine. The internal combustion engine is supercharged and equipped with a supercharger intercooler arranged below the water cooler and parallel to the central axis of the engine. The cooling air delivered by the cooling blower passes through the supercharger intercooler in a direction perpendicularly with regard to the central axis of the engine. The supercharger intercooler has a gap of its own for the discharged air which has an exit parallel to the discharged air of the water cooler.

Abstract: A turbocharger comprising a compressor casing with a compressor impeller accommodated therein; a turbine casing with a turbine wheel accommodated therein and mounted on a shaft which also mounts said compressor impeller; and an intermediate casing which couples the compressor casing to the turbine casing. Provided in the turbine casing are two adjacent passages each of which serves the purpose of carrying exhaust gases to one half of the turbine wheel. The passages are isolated from each other at the inlet to the turbine wheel by means of two partitions. A disk to protect the intermediate casing against the effects of exhaust gas heat is mounted coaxially with the shaft between the intermediate casing and the turbine casing. The disk is held against the partitions by springs located in the intermediate casing and is adapted to be moved axially along the shaft by the agency of the difference between the pressures exerted by the exhaust gases and the springs.

Abstract: Two cylinders of a Diesel or gasoline engine are connected by a pipe leading into ports of the combustion chambers which are simultaneously uncovered by the respective pistons at the beginning of the exhaust phase of one chamber and the end of the intake phase of the other. During this temporary communication, the residual energy of the exhaust gases in said one chamber compels air in said tube to supercharge said other chamber. Passageways are provided in the pistons which connect said pipe with air inlet and exhaust manifolds to ensure scavenging of the pipe between the supercharging periods.

Abstract: A starter drive for an internal combustion engine has a plunger pole starting motor drivably connected to a pinion adapted to engage the ring gear on the engine when cranking the engine. A shift fork is pivotally mounted on a lever arm connected to the plunger pole and a single spring urges the shift fork to position the pinion in cranking position when the motor is energized and returns the shift fork to position the pinion in non-cranking position when the motor is deenergized. Space is made available for a cushioning device between the motor and pinion to absorb starting torque.

Abstract: Control systems in which transition between oxidizing and reducing state of the exhaust gases is sensed, and the input to the engine modified in accordance with sensed exhaust gas composition utilize a sensor which has an output signal having a transition jump, the extent of the jump being highly temperature dependent; in accordance with the invention, a signal is derived representative of change in level of the transition jump, as a function of temperature, and the control circuit responsive to the transition jump, and controlling input to the engine is modified in accordance with the signal repesentative of level change of the transition jump, to compensate for temperature-dependent changes.

Abstract: An internal combustion, reciprocating-piston engine which includes a sealed crankcase for inducting and compressing air or an air-fuel mixture into the engine. The compressed gas is then forced into a holding tank for subsequent induction into the cylinder combustion chamber. This pre-compresses or "supercharges" the fuel mixture before compression by the piston. An enclosed lift tube within the connecting rod is provided for conveying lubricating oil through the crankcase to the cylinder walls.

Abstract: An exhaust gas recirculation system for an internal combustion engine includes a valve in an exhaust gas recycle conduit which is positioned in response to suction at the high port of the carburetor.

Abstract: A mechanical lock-out by which a Bendix-type starter for an internal combustion engine is rendered incapable of starting the engine if mechanism - such as the propulsion system of a power lawn mower or tractor - has been drivingly connected with the engine. The lock-out comprises a lever pivoted to the housing of the starter with a part thereof in the path of the driving pinion of the starter as it advances towards meshing engagement with the ring gear on the engine flywheel, so that the lever must be free to move with the advancing driving pinion for the starter to be operative, and a blocking member, also pivotally mounted on the housing of the starter, for movement to and from an operative position preventing such movement of the lever.

Abstract: The invention contemplates a protective measure for internal parts of a gas turbine, whereby foreign objects in the flow of inlet gas to the turbine are subjected to strong centrifugal action at a locally frangible region of the inlet duct, i.e., prior to turbine exposure. The material and structure of the frangible region are selected such that foreign objects of greater than predetermined mass will rupture the same and thus avoid ingestion of such objects in the gas turbine. The invention is described for the case of a turbocharger which is operated by exhaust gas from an internal-combustion engine, and which supplies compressed inlet air to the engine; upon rupture of the frangible region, a rotor-bypassing flow is established to the gas-turbine exhaust for safe handling of engine exhaust and for use in prompt development of a suitable warning.

Abstract: In an internal combustion engine, a fuel metering system having a metering apparatus for distributing charges of fuel from the fuel pump at predetermined intervals, and exhaust gas mixing device for mixing exhaust gas from the exhaust manifold with charges of fuel and a fresh air mixing device for mixing fresh air with the charges of fuel.

Abstract: A power control valve attachment is provided for assembly to a pre-existing exhaust system of a two cycle motorcycle type engine for effecting a back pressuring of the engine cylinder chambers during operation of the engine and includes an assembly of pressure plate and spring biasing means and means for mounting the assembly in the exhaust system duct at a minimum cross sectional area thereof for axial deflective movement under the pressure of the exhaust gases.

Abstract: A pump, especially circulating pump, particularly for heating systems, which has a pump wheel rotatably but axially non-displaceably arranged within a housing which has two suction chambers arranged in axial direction of said pump wheel on opposite sides thereof while at least one pressure chamber likewise arranged in the housing extends around the pump wheel and its axis of rotation. The pump wheel has two suction openings located in the vicinity of its axis of rotation at opposite sides thereof while communicating with the respective adjacent suction chamber.

Abstract: In an automotive internal combustion engine, a rear main bearing is channeled with one or more channels to direct the high pressure output oil flow away from the rear main seal. The channeled oil flow prevents a high pressure buildup adjacent the rear main seal and attendant deterioration thereof and oil leakage therethrough.