Abstract: A multi-cylinder reciprocating piston internal combustion engine is divided into a working section and a compressor section, with the working section supporting the combustion function and the compressor dedicated solely to infusion of intake charge into the working section. In a preferred embodiment, the compressor employs a scotch yoke motion translator with cycle dynamics matched to optimize compressor function. This is characterized by a displacement of crankshaft orientation from 0 degrees at top piston position. The working portion employs a scotch yoke motion converter exhibiting cycle dynamics matched to either a two, four, or diesel engine power cycle.

Abstract: There is disclosed an Oldham's driving engine for taking out the maximum combustion pressure effectively from a top dead center in a piston engine as output for revolving an output shaft 17. A sliding block 11 is interposed between both flanges 8 and 9 to constitute an Oldham's coupling mechanism. One flange 8 is constituted as an idler flange 8, the other flange is constituted as an output flange 9, and an output end of a piston rod 4 is connected to the center of the sliding block 11. Further, a center line B.sub.2 of both the flanges 8 and 9 is placed at a phase angle .theta. with the axial center B.sub.1 of the cylinder in the reversed rotational direction of the sliding block 11.

Abstract: An exhaust control valve arrangement for a two cycle internal combustion engine for altering the compression ratio to provide optimum running under all conditions. An arrangement is provided for cleaning the exhaust control valve and its surrounding cooperating surfaces of the engine upon shutting off of the engine to preclude the formations of deposits that can cause sticking of the valve element. The valve element is rotated through a number of cycles after the engine is stopped through a wider range than during its normal valving operation for removing deposits. The number of cycles is chosen in response to an engine condition such as length of time of running or amount of lubricant supplied to the engine. Various valve arrangements are disclosed that improve the cleaning operation and permit cleaning even while the engine is running.

Abstract: A fuel injection system for an engine having a cylinder, a piston in the cylinder, and an inlet port at the cylinder comprising a fuel inlet passage communicating with the inlet port and adapted to be connected to a fuel source and a fuel valve movable between an open position for allowing fuel to flow in the inlet passage and a closed position preventing fuel flow. The fuel valve is biased into one of the open or closed positions and a control system permits movement of the fuel valve to the open position at timed intervals to deliver metered volumes of fuel to the engine cylinder.

Abstract: The invention relates to a method for controlling a two-stroke internal-combustion engine with fuel injection in the low load range, in which the fuel supply to the combustion space is interrupted for a number of working strokes stored in a characteristic diagram which is a function of operating parameters. In this case, the stored characteristic diagram is adaptively corrected continuously by means of parameters which characterize the readiness to ignite or the ignition behavior of the internal-combustion engine.

Abstract: A system for controlling the supply of fuel to a multiple cylinder, two cycle, crankcase compression, internal combustion engine wherein air flow is normally measured by a pressure sensor in the crankcase chamber of only one of the cylinders. When an abnormal condition is sensed, the supply of fuel to the cylinder associated with the pressure sensor is discontinued and in some embodiments, the control of the fuel to the other cylinders is accomplished by means other than pressure sensing.

Abstract: An improved intake manifold and plenum construction for an electronic fuel injected engine. The manifold includes a plurality of parallel runners, with each runner having a lower end communicating through a port in the cylinder head with a cylinder of the engine, and an open upper end. A fuel injector is mounted in each runner for injecting fuel into the runner. A plenum is mounted on the manifold and includes an upper wall and a lower wall which is spaced from the upper wall to define an air chamber, The upper ends of the runners communicate with the chamber, so that air is drawn from the chamber through the runners to the cylinders.

Abstract: An internal combustion engine having intake and exhaust manifolds and a cylinder defining a combustion chamber in which a piston reciprocates and having a wall formed with a port has a combined poppet/slide valve. This valve has a lift valve having a head sealingly engageable in the port and movable in a predetermined direction between a raised position permitting flow past the head through the port and a closed position blocking flow through the port and a stem extending from the head in the direction and having an outer tappet end. It also has a sleeve centered on and rotatable about an axis generally perpendicular to the direction and formed with a radially contoured cam radially engaging the tappet end of the stem so that rotation of the sleeve about its axis displaces the valve between its positions. The sleeve is formed with a pair of axially offset and radially throughgoing apertures.

Abstract: Liquid fuel is burned by feeding a mixture of a liquid together with liquid fuel which has been pre-gasified by rapid heating into a combustion zone. The liquid fuel is gasified by contact with a hot body. An internal combustion engine comprises a heated chamber having a heater, an air inlet and a fuel inlet. The mixture of gasified fuel and air is then introduced into the inlet manifold of the engine. Atomized liquid fuel and air is also inducted into the engine in a conventional manner, such as via a carburettor.

Abstract: A turbine, which is an essential portion of an air motor, is disposed midway along an air-intake passage communicating to combustion chambers of an engine. A generator is operably connected to an output shaft of the turbine. The generator has a function to control the rotational motion of the turbine in proportion to the magnitude of the generated electric energy, in addition to the original function of generating the electric energy. The generator is electrically connected to an air-intake control device. In other words, the air-intake control device includes a transistor, and potentiometer which includes a resistor and a sliding element. A positive electrode of generator is connected to an emitter of the transistor. Further, a base of the transistor is connected to an output terminal of the potentiometer, and a collector thereof to a battery. When the operation magnitude of an acceleration pedal is small, the current flowing through the base decreases.

Abstract: An internal combustion engine in which a circular housing is journaled to an end of a connecting rod remote from a piston at an eccentricity, and a rotary member is rotatably received in the circular housing, with an output shaft connected to the outer surface of the rotary member at an eccentricity. An internal ring gear provided in the circular housing meshes with a pinion gear fixed around a bearing. With this arrangement, it is possible to efficiently convert the explosion pressure in the combustion chamber into output torque on the output shaft, thus increasing the output torque of the engine while reducing fuel consumption. At the same time, the engine output power is stabilized in the low-speed region of engine operation. Consequently, the explosion pressure in the combustion chamber is efficiently converted into output power of the engine output shaft, thus achieving high efficiency and large output power of the engine.

Abstract: A dual bore throttle body assembly for a marine engine. The assembly includes a body having a pair of side-by-side bores, each of which is adapted to be enclosed by a flat throttle valve. A separate shaft is connected to each throttle valve and a throttle cable is connected to the shafts through a progressive linkage. The linkage is constructed such that only one of the valves is initially opened, and when that valve is approximately 50 percent open, the second valve is then opened. The speed of opening of the second valve is greater than that of the first valve so that both valves will reach the full opened position at the same instant. Each shaft is provided with a longitudinal slot which receives the respective throttle valve, and the valves are secured within the slots by mechanical fasteners such as screws.

Abstract: An internal combustion engine has a cylinder head with a combustion chamber defined by a depression in the head. The raised face surface of a piston extends into the combustion chamber in the cylinder head as the piston approaches top dead center, and creates turbulent squish currents within the chamber as closely matching surfaces on the piston face and on the walls of the combustion chamber in the head force gases out from between these surfaces. The turbulence helps to prevent autoignition and allows higher compression ratios than would otherwise be possible.

Abstract: A air charging valve for use with a air forced fuel injection system. The charging valve admitting and storing compressed air from the engine cylinder and releasing it into the fuel injector to force out the air/fuel mixture into the engine cylinder. The charging valve will accept the pressurized air from the engine cylinder without allowing any air to escape back into the combustion chamber once it is in the air charging valve. The fuel injection system includes an injector having a fuel and air mixing chamber that includes a normally closed injector valve; the chamber being for premixing air and fuel before introduction of the compressed air which causes the fuel injection event.

Abstract: A compression braking system for an internal combustion engine having at least one working piston including a master piston operated by an engine component such as a fuel injector actuating mechanism and a slave piston fluidically connected with the master piston to open an engine exhaust valve wherein a pressure relief valve is provided to prevent excessively high pressure supply fluid from a low pressure supply circuit from reaching the high pressure circuit connecting the master and slave pistons thereby preventing inadvertent and excessive movement of the slave piston and possible damage to the engine. The pressure relief valve is fluidically connected to the low pressure supply circuit upstream of a control valve which separates the low and high fluid circuits and opens to vent fluid from the low pressure circuit while allowing continuous, uninterrupted operation of the engine in the braking mode.

Abstract: A rotational speed control apparatus for internal combustion engines is constructed so that, when drive control of an idling speed control valve is performed based on a reference control quantity of the idling speed control valve, a highland learning value or a lowland learning value is stored for the idling speed control and a feedback correction quantity is computed for the idling speed control, in order to control a rotational speed of an internal combustion engine for a vehicle at a desired rotational speed, which is set in accordance with an engine temperature, at the time of an idling operation of the internal combustion engine. It is therefore possible to prevent an excessive drop in the rotational speed or a stall of the internal combustion engine, which occurs after the vehicle has descended a slope to a lowland, due to erroneous learning which is caused when the vehicle descends a slope from a highland to a lowland while travelling from a lowland to a highland and then to a lowland and so on.

Abstract: A spark ignited engine of the type employing exhaust gas recirculation and stratification of the recirculated exhaust gas. The engine has at least one cylinder accommodating a piston and communicating with at least one inlet port cooperating with an inlet valve for inducing air into the cylinder, and at least one exhaust port cooperating with an exhaust valve for discharging exhaust gas from the cylinder. The engine is operated such that the recirculated exhaust gas is induced alone into the cylinder through the inlet port during a part of the engine operating time whereby recirculated exhaust gas and air are introduced through the same port, though at different times.

Abstract: An improvement in a starter of the type having a housing to be attached to an internal combustion engine and structure on the housing for rotating a crank shaft on the internal combustion engine to which the housing is attached. The improvement resides in structure for intermittently operating a decompression mechanism on the internal combustion engine to which the housing is attached as an incident of the crank shaft rotating structure being operated.

Abstract: A two stroke cycle engine cylinder block (9) has exhaust ports (14) controlled by power valves which rotate on an axis extending longitudinally of the block (9). Along this axis the block (9) has a plurality of aligned recesses in which are located bearing members (24) for the power valves. Bores (25) in each bearing member (24) are axially aligned and the bearing members (24) immobilely retained in the aligned recesses by assembly of the exhaust manifold (16). Spigots on the power valves are received in the bores (25) and coupled together so that the power valves rotate in unison.

Abstract: An apparatus for controlling the amount of exhaust gas recycled has a pneumatic valve 7, coupled to a pressure chamber 12 which is connected, on the one hand, over a pipeline 14 with the intake manifold 2 of the internal combustion engine and, on the other, for changing the exhaust gas recycling rate, with the atmosphere over a pipeline 16, through an electromagnetic valve 17. The duty cycle of the cycle valve 17 is varied by electronic control equipment 20 in accordance with the desired rate of recycled exhaust gas. An elevation correction is attained for the recycling rate because the atmospheric pressure is determined from the relationship between the aspirated air mass, determined by an air-mass meter 4 and the throttle valve angle, determined by a sensor 21. The duty cycle of the valve 17 is changed so that the recycling rate for the exhaust gas, which also depends on the load and the rotational speed of the engine remains essentially constant.