Abstract: A method for starting a compression ignition engine having at least one cylinder with a reciprocating piston located therein, an intake valve configured to control the intake of air to an intake port of the cylinder and an exhaust valve configured to control the expulsion of gas from an exhaust port of the cylinder. The method includes the steps of: cranking the engine, conditioning intake air at the intake port of the cylinder to raise the temperature of air in the cylinder, controlling a valve timing the intake valve and/or the exhaust valve to allow the piston to compress the air within the cylinder, thereby increasing the temperature of the air within the cylinder, and injecting fuel into the cylinder when the air within the cylinder has been heated to a temperature sufficient to support compression ignition of a gasoline and air mixture within the cylinder.

Abstract: Disclosed is an air conditioner and control method thereof. The air conditioner and control method thereof is to improve rapid heating performance without using a large-capacity compressor. The air conditioner includes an indoor unit having a first heat exchanger, an outdoor unit having a compressor and a second heat exchanger, a refrigerant cycle configured to form a refrigerant circulation path between the indoor unit and the outdoor unit, a flow path switch configured to switch a flow of a refrigerant in the refrigerant cycle, and a controller configured to control the flow path switch to allow one part of the refrigerant discharged from the compressor to flow into an inlet of the compressor and the other part of the refrigerant discharged from the compressor to flow into at least one of the first heat exchanger and the second heat exchanger.

Abstract: A positive crankcase ventilation (PCV) system for an internal combustion engine includes a forced air induction system configured to supply air to the engine, a PCV line configured to fluidly couple between a crankcase of the engine and a clean side air duct of the forced air induction system, a make-up air (MUA) line configured to fluidly couple between the crankcase and the clean side air duct, and an inlet valve disposed in the forced air induction system. The inlet valve is configured to be controlled selectively move between an open position and a closed position to vary an air restriction in the forced air induction system and generate a vacuum. The vacuum draws blow-by gases from the crankcase through the PCV line and into the air induction system when the engine is under either naturally aspirated or boosted conditions.

Abstract: A system for an engine drive that engages a single timing band with a camshaft, a crankshaft and various accessory drives in such a configuration that the camshaft is rotated in a direction opposite that of the crankshaft, while ensuring a reflex wrap angle around each drive sprocket coupled to the camshaft, crankshaft and various accessory drives.

Abstract: An engine-powered vehicle includes a measuring instrument that registers the actual value for fuel consumption for the vehicle and a device for presetting a setpoint value for the fuel consumption. The actual value of the fuel consumption for the vehicle that is registered is used to control, and adjust, the output of the engine for controlling the vehicle's speed.

Abstract: A method for damping of a power train oscillation in a vehicle provided with a prime mover which delivers a torque related to a torque request M from a vehicle system and rotates at a speed ?. A cyclic variation S in the rotation speed ? of said prime mover is determined. The torque request M is then given an oscillation-damping characteristic by use of the cyclic variation S, making it possible for the power train oscillation to be effectively damped out.

Abstract: A method is provided for compensating for a valve lift deviation between engines equipped with a CVVL mechanism, in which the valve lift deviation is compensated for by an MAF sensor for measuring a reference air flow rate and an MAP sensor for measuring the pressure of an intake manifold. The method includes determining whether learning conditions for learning a valve lift deviation are met; after the determination, comparing a value MAP_MES measured by the MAP sensor and a modeled pressure MAP_MDL of a surge tank; if the MAP_MES value and the MAP_MDL value are different, learning the valve lift, and after the learning, calculating the final valve lift by adding the learned value of the valve lift to the basic valve lift characteristics.

Abstract: A dual redundant permanent magnet type dynamoelectric machine includes a dual flux throttle system to selectively disable one of a first motor and a second motor.

Abstract: A sensor unit includes a unit main body mounted on a throttle device, and a pressure sensor chamber that is provided at the unit main body and that accommodates an intake pressure sensor to detect an intake pressure through an intake pipe. The pressure sensor chamber is divided by a partition into a pressure receiving area to receive a pressure in the intake pipe and a pressure detecting area to detect the pressure by the intake pressure sensor such that the pressure receiving area communicates with the pressure detecting area through a communication portion. A foreign substance is prevented from flowing into the intake pressure sensor when guiding an air in the intake pipe to the intake pressure sensor, thereby improving detection accuracy by the intake pressure sensor.

Abstract: A method for controlling a diesel engine in a vehicle is presented. The engine comprises at least one cylinder, a fuel injector for each cylinder for injecting fuel into the respective cylinder, and a throttle valve for controlling the flow of air into the cylinder. The throttle valve is adjusted to assume a not fully open position if an amount of fuel injected into the at least one cylinder is equal to or less than a fuel injection threshold value.

Abstract: A diesel engine (1) has: a flow adjuster (10) for throttling exhaust flow; an intake heater (71) for heating intake air; a thermal medium circulator (72) for circulating a thermal medium to warm the diesel engine (1); a cylinder cut-off device (73) for conducting cylinder cut-off; and a fuel injection timing advancing device (74) for advancing timing for supplying fuel to a cylinder, the respective devices being actuated at least from pre-high-idle step to a neighborhood of high-idle condition, so that fuel combustion stabilization of the diesel engine (1) can be rapidly enhanced during a period where less fuel is supplied into the cylinder and fuel combustion time is short, thus greatly reducing discharge of white smoke and possibility of engine bunching.

Abstract: A diesel engine (1) has: a low adjuster (10) for throttling exhaust flow; an intake heater (71) for heating intake air, a thermal medium circulator (72) for circulating a thermal medium to warm the diesel engine (1); a cylinder cut-off device (73) for conducting cylinder cut-off; and a fuel injection timing advancing device (74) for advancing timing for supplying fuel to a cylinder, the receptive devices being actuated at least from pre-high-idle step to a neighborhood of high-idle condition, so that fuel combustion stabilization of the diesel engine (1) can be rapidly enhanced during a period where less fuel is supplied into the cylinder and fuel combustion time is short, thus greatly reducing discharge of white smoke and possibility of engine hunching.

Abstract: The present invention provides improvements in EGR control system of a diesel engine by limiting the maximum fuel, in amount, to be drawn into the engine cylinder and EGR rate in response to result of monitoring performance of EGR control. When the actual performance of EGR control falls outside of a predetermined window around the normal performance of EGR control, the maximum fuel is reduced and a throttle valve in the air intake path is fully opened.

Abstract: An idle speed control for an internal combustion engine has a crankcase adapted to be connected to a fuel metering device used to selectively deliver fuel to the engine in response to pressurized air pulses generated in the engine. The idle speed control includes a vessel having a pressure actuated member movably mounted therein to define a first chamber and a second chamber. The second chamber is provided with a biasing device acting on one side of the pressure actuated member and the first chamber admits the pressurized air pulses acting on an opposite side of the pressure actuated member and controllably leaking a portion of the pulses therefrom. The idle speed is controlled by a leak-down rate of pressurized air pulses released from the second chamber.

Abstract: A compression ignition engine comprising a fuel injector arranged in the combustion chamber. Fuel containing oxygen is used as the fuel injected from the fuel injector to the combustion chamber. The mean air-fuel ratio in the combustion chamber is feedback controlled to a stoichiometric air-fuel ratio based on an output signal of an O.sub.2 sensor. The NOx, HC, and CO produced at this time are removed by a three-way catalyst.

Abstract: In a diesel internal combustion engine comprising an air intake pipe and a throttle valve arranged in the latter, the throttle valve is equipped with a drive in order to prevent operating states which are dangerous for the internal combustion engine, e.g. uncontrolled exceeding of the allowable maximum speed due to disturbances. The drive holds the throttle valve open during trouble-free operation and moves it into a closed position during disturbances. The closed position of the throttle valve is determined in such a way that the remaining reduced air flow cross-section throttles the combustion air passing through to such an extent that the internal combustion engine still runs securely at idling speed and does not exceed a predetermined speed during feeding of a desired quantity of fuel.

Abstract: A vehicle speed control device in a vehicle having a variable speed engine and drive train arrangement connecting the engine to a drive wheel therefore includes a foot pedal movable in first and second directions, a vehicle speed transducer arrangement for generating a signal in response to vehicle speeds in excess of a predetermined speed and a control arrangement for varying the value of the predetermined speed. A throttle arrangement is responsive to movement of the foot pedal in the first direction for increasing the vehicle speed and is responsive to movement of the foot pedal in the second direction for decreasing the vehicle speed. A coupling arrangement transfers movement of a movable actuator to the foot pedal, to move the foot pedal in the first and second directions. A regulating arrangement is responsive to the signal of the speed transducer arrangement for regulating the vehicle speed at or just below the predetermined speed.

Abstract: An anti-overrunning carburetion system which includes a carburetor with a throttle valve for opening and closing the venturi passage and a pressure responsive actuator having a pressure chamber for actuating the throttle valve to a closing position against a spring bias. A vibration responsive pneumatic pump, having also a pressure chamber, is connected to direct pressure directly to the pressure chamber of the actuator. A vibration sensor in the form of a spring backed ball is mounted to be subject to vibrations of an engine and is in communication with the pressure chamber of the pump and to atmosphere. In response to overrun conditions of the engine, the sensor will connect the pump pressure chamber to atmosphere and allow pressure to develop in the pressure chamber to be directed to the actuator, thus causing the actuator to reduce the throttle opening.

Abstract: An anti-overrunning carburetion system which includes a carburetor with a throttle valve for opening and closing the venturi passage and a pressure-responsive device for actuating the throttle valve to a closing position against a spring bias. A vibration responsive pneumatic pump is connected to direct pressure to the pressure responsive device and interposed between the pump and the pressure responsive device is a vibration sensor which will pass pressure from the pump in response to vibrations resulting from an overrun condition to effect a closing movement of the throttle valve.

Abstract: An anti-overrunning system for an internal combustion engine having a throttle valve in a carburetor in which an actuator for the throttle valve is responsive to pump pressure to move the valve to a closing position. A vibrating pump responsive to engine vibration is located to direct output control pressure to the actuator. A control valve between the pump and the actuator normally blocks pressure to the actuator but is responsive to air pressure from an engine cooling fan such that, upon overrun conditions, the fan pressure will actuate the control valve to connect the pump to the actuator to cause the throttle valve to move toward a closing position.

Abstract: An anti-overrunning device for an internal combustion engine which includes a carburetor with a controlled throttle valve. An actuator for the throttle valve includes a spring-biased rod mounted on a diaphragm. The rod normally urges the throttle valve to a closing position. The actuator includes a pressure actuated diaphgram responsive to pressure from a vibrating pump. This pressure tends to open the throttle valve. A vibration sensor is positioned to relieve pressure on the diaphgram of the actuator and, in response to overrunning of the engine, causes the throttle valve to close in under the influence of the spring bias.

Abstract: An anti-overrunning device for an internal combustion engine utilizing a carburetor with a throttle valve and a vibrating pump for generating pressure by vibrations of the engine. An actuator is provided for the throttle valve to move it to a closing position, and a control valve is used to control flow of pressure from the vibrating pump to the actuator. A generator driven by the engine provides electromotive force to actuate the control valve.

Abstract: A controlling device for controlling the supply of gases into combustion spaces of a self-igniting internal combustion engine includes a control member for regulating the flow of returned exhaust gas and an air throttle for regulating flow of sucked in air. The air throttle and the control member are linked to pneumatic setting motors which in turn are controlled by pressure transforming means operating with a source of a reference pressure and a source of control pressure. An output of the pressure transforming means is provided with electrically controlled switching means which selectively actuate respective setting motors. The electric control of the pressure transforming means and of the connecting means is made in dependency on operational variables of the engine.

Abstract: A cruise control system for a vehicle having an automatic transmission comprises a vehicle speed sensor for detecting the actual vehicle speed, an engine output power control mechanism, and a vehicle speed controller which compares the actual vehicle speed detected by the vehicle speed sensor with a set speed and controls the engine output power control mechanism in accordance with the result of the comparison so that the vehicle speed is converged upon the set speed at a predetermined rate. The automatic transmission is caused to downshift when the actual vehicle speed is lowered from the set speed by a predetermined amount while the vehicle speed controller operates to fix the vehicle speed, and when the automatic transmission is shifted down, the predetermined rate of convergence is reduced so that the vehicle speed is converged upon the set speed at a reduced rate.

Abstract: A two-stroke engine is disclosed which is controlled by a carburetor throttle valve and has a crankcase subjected to continuously alternating overpressure and underpressure. A pneumatic control member responsive to a signal dependent on the rotational speed of the engine is in pressure communication with the inner chamber of the crankcase via a valve. The output member of the pneumatic control member is connected with the throttle flap of the carburetor. The valve provided between the crankcase and the pneumatic control member is responsive to a signal for controlling the pressure in the pneumatic control member. This valve can be configured as a resonance control valve fixedly mounted to the housing of the engine.

Abstract: A diesel engine intake system including a timing valve which is positioned in the intake system in engine starting and warming-up periods under a cold engine condition. The timing valve is opened in the final period of the intake stroke so that a strong suction pressure is produced in the combustion chamber before the timing valve is opened. When the timing valve is opened, the intake air as rushes into the combustion chamber at a high speed, whereby the intake air is compressed under the inertia of the high speed flow to thereby increase the temperature of the intake air. The engine is also provided with a blow-by passage and an exhaust gas recirculation passage, both opening to the intake passage upstream of the timing valve, so that it is possible to prevent the blow-by gas and the recirculated exhaust gas from being drawn under the suction pressure when the timing valve is closed.

Abstract: A throttle control apparatus for an internal combustion engine for a motor cycle, comprising a manually operated rotatable throttle actuating grip member, a first linkage cable for providing driving connection selectively in one of two opposite directions from the grip member to the engine throttle valve, a control circuit for producing a control signal when actuated, drive means responsive to the control signal for producing a driving force in one direction, a throttle regulator unit for providing driving connection from the drive means to the throttle valve, and a second linkage cable for transmitting the driving force to the throttle regulator unit.

Abstract: The invention is directed to a control system for a two-stroke engine for limiting a control quantity thereof such as the rotational speed. For this purpose, a pressure line including a valve is connected to the crankcase and leads to a pneumatic controlling member which is responsive to a mechanical or electrical signal (vibrations or electric pulse from the ignition system). By means of suitable transmission means, the movement of the controlling member is transmitted to the carburetor throttle, for example.

Abstract: A position control device for use in association with a foot pedal member controlling the fuel flow to an engine of a vehicle. The device includes an elongated and hollow chamber means and an actuator piston slidably disposed in the chamber means and movable between first and second positions therein. The first position represents a position of maximum fuel supply to the engine. Structure separately supporting the foot pedal member is provided for movement between first and second positions but permitting an operative connection of the foot pedal member to the actuator piston for movement along a path.

Abstract: An automatic speed control mechanism for a motorcycle embodying an actuator device for automatically positioning the throttle of the engine. The automatic device is able to generate sufficient force so as to overcome the normal closing bias of the throttle but has insufficient force to resist throttle closing movement of the manual actuator so that the operator may manually override the automatic speed control and reduce the speed of the motorcycle.

Abstract: In an externally ignited internal combustion engine for a vehicle with an electronic device for controlling the gas mixture composition and the point of ignition a leaner fuel-air mixture and the an earlier point of ignition is set before the maximum permissible speed is attained. The reduction of power of the combustion engine caused thereby shows the driver that the speed of the combustion engine approaches the maximum permissible speed at which the fuel supply and the ignition will be interrupted. This should cause the driver to release the gas pedal or switch into the next higher gear.

Abstract: An air atomizing throttle body is formed with a single point fuel injector located above the inlet to the throttle body induction passage, the throttle body having an inverted cup-shaped sleeve valve, the lower edges of which cooperate with a stationary conical valve seat projecting radially into the induction passage to define a variable area flow path, and including idle speed air vents to equalize pressures on opposite sides of the sleeve valve to minimize the force needed to move the valve by a pressure operated bellows incorporated into the valve, the valve members forming a labryinthian type air/fuel flow path for the shearing of the fuel globules to atomize the same.

Abstract: A vibration suppression system for a diesel engine comprises a first device for decreasing the amount of intake air to be inducted into the engine when operated. A second device is provided to heat the intake air when operated. Additionally, a third device is provided to detect a low engine speed and low engine load operating range, and to produce a signal in response thereto. The first and second devices are operated in response to the signal from the third device, thereby avoiding irregular combustion and misfire while suppressing engine speed fluctuation and torque fluctuation.

Abstract: Several embodiments of fuel injection controls for two-cycle crankcase compression internal combustion engines. In each embodiment, the fuel injection is controlled by measuring the amount of air inducted through measurement of the pressure generated in the crankcase. In each embodiment, abnormal pressure variations in the crankcase not due to the amount of air inducted are eliminated by measuring the pressures at predetermined crankshaft angles. In some embodiments, this is done through the use of a valving arrangement and in other embodiments, this is done electronically.

Abstract: A force operated latching device for use with a switch, valve or motor includes a sleeve-piston combination responsive to the force and which is latched and delatched in response to the force, usually in the form of fluid pressure. The latching device may be incorporated into a manifold for control of internal combustion engine.

Abstract: A throttle actuator for a vehicle having a source of compressed air. A power wall having a constant pressure applied to one side and means for applying or dumping pressure from the other side. A rod extending from the power wall through seals to a chain which is coupled to a throttle arm. The power wall return spring and the throttle arm return spring respectively return the power wall and throttle arm to the closed throttle position. Said throttle actuator comprising solenoid operated valves which control movement of said power wall upon demand by storing or dumping compressed air from one side of said power wall.

Abstract: A vibration suppression system for a diesel engine, comprises a device for decreasing the amount of intake air to be inducted into the engine when operated. A heating device is provided to heat the intake air when operated. A first detecting device is provided to detect a low engine speed and low engine load operating range of the engine, to produce a first signal in response thereto. A second detecting device is provided to detect the level of vibrational acceleration of engine vibration having frequencies within a predetermined range, and to produce a second signal in response thereto. First and second control devices are provided respectively operate the intake air amount decreasing device in response to the first signal and the heating device in response to the second signal, thereby throttling intake air in the low engine speed and low engine load operating range while heating intake air when the vibration acceleration level is outside a predetermined allowable range.

Abstract: An intake throttling device adapted to a Diesel engine includes an intake pipe for connection to an intake manifold of the engine, a throttle valve arranged within the intake pipe, and an actuator operatively connected to the throttle valve and arranged to be deactivated to fully open the throttle valve during normal operation of the engine, to be rendered in its first activated condition to adjust the opening angle of the throttle valve during idling operation of the engine, and to be rendered in its second activated condition to fully close the throttle valve when the engine is arrested or immediately before the engine is arrested.

Abstract: A throttle valve opener for a throttle valve in the intake passage of a vehicle engine is actuated by suction pressure from the intake passage, the suction pressure being weakened by introduction of atmospheric air during certain operating conditions of the engine. Suction pressure for operating the throttle valve opener is cut off when the vehicle speed or the engine RPM exceed predetermined values, or when the engine's cooling water temperature rises above a predetermined limit. This system controls deceleration of the engine to reduce exhaust pollutants without adverse effects on the drivability of the vehicle.

Abstract: In an engine system including an internal combustion engine and an exhaust turbine supercharger, a valve stop mechanism is provided to stop the throttle valve of the engine in an angular position anterior to the idle position thereof when the throttle valve is suddenly moved toward the idle position in the presence of an air pressure higher than a predetermined value in the air induction passageway of the engine downstream of the compressor unit of the supercharger and upstream of the throttle valve of the engine so as to preclude production of pressure surges in exhaust turbine supercharger.

Abstract: A water-cooled two stroke engine including a cylinder formed with an exhaust port which is adapted to be cyclically closed by a piston reciprocating in the cylinder. The exhaust port is provided at the upper portion with a port timing control valve which is operated to control the port timing in accordance with the engine speed by a piston-cylinder type actuator. The actuator is adaped to be operated by the engine cooling water pressure and has an operating pressure chamber at one side of the piston and a compensating pressure chamber at the other side. The cooling water supply passage has a flow restriction and the pressure upstream of the restriction is introduced into the operating pressure chamber and that downstream of the restriction into the compensating pressure chamber.

Abstract: An engine speed and loss of oil pressure control arrangement for an engine such as is used in transport refrigeration and is operative at a low speed and a high speed, the arrangement including two axially aligned pistons 12 and 36 into adjacent cylinders 10 and 34, respectively, the first piston 12 moving from an engine off position to a low speed position upon closure of the valve 22 when engine operation is initiated, this forcing the second piston 36 to a low speed position which effects said low speed through leakage 40 to the engine speed control means, the second piston 36 moving further to the right to an engine high speed position upon opening of valve 28 in a conduit leading from the first cylinder to the second cylinder.

Abstract: An apparatus and method having a first unit for creating mechanical movement with a certain frequency ofmovement. A second unit is operatively associated with the first unit for producing a pulsing electrical signal that has a pulse rate substantially proportional to the frequency of movement. A third unit is operatively associated with the second unit for producing a pneumatic signal that is substantially proportional to the pulse rate of the pulsing electrical signal.

Abstract: A gas flow measuring mechanism having a feedback control mechanism comprising a flow detection valve and a flow control valve which are in series with each other and placed in a channel, an area flowmeter for keeping constant the difference in the pressures existing on opposite sides of said flow detection valve and determining the amount of incoming air by the opening area of the flow detection valve, a pressure-sensitive amplifier mechanism for sensing the deviation of the difference in the pressures existing on opposite sides of the flow detection valve from a set pressure difference on the basis of the displacement of a pressure setting diaphragm, and a valve opening mechanism for controlling the opening and closing of the flow detection valve, wherein a bellows enclosing a gas at a reference temperature and under a reference pressure and having an effective area equal to (effective area of pressure difference setting diaphragm).times.

Abstract: An internal combustion engine is provided with a device for automatically preventing thermal and mechanical stress during overload periods, and to power the engine with the most economical fuel consumption rate possible. In a preferred embodiment, the device is associated with the variable speed governor of the main diesel engine of a ship. The device includes a system actuated by significant movements of the governor to regulate the fuel pump or pumps or reduce the engine speed to a more economical and safe level. Means for overriding the system in emergency situations may be provided.

Abstract: A vacuum operated servo comprises a vacuum chamber defined by a flexible diaphragm and a cover, a valve seat secured to the cover so as to project into the vacuum chamber, a valve body yieldably mounted on the flexible diaphragm, a first vacuum conduit with a first valve for inducing vacuum from a vacuum source into the vacuum chamber through the valve seat, a second vacuum conduit with a second valve for inducing vacuum from the vacuum source into the vacuum chamber, and a leak orifice for leaking the vacuum in the vacuum chamber. When the first valve is opened to induce vacuum of the vacuum source into the vacuum chamber, by the vacuum, the diaphragm is moved so that the valve body contacts with the valve seat. Upon the contact, the induction of the vacuum is interrupted to stop the movement of the diaphragm, with the vacuum being introduced and leaked out of the vacuum chamber.

Abstract: Disclosed herein is a lawn mower including a blade housing, wheels for supporting the blade housing for movement along the ground, a rotary blade supported in the blade housing, and an internal combustion engine supported by the blade housing and rotatably driving the blade. The internal combustion engine includes a carburetor, a movable throttle control for controlling fluid flow through the carburetor, the throttle control being movable from an open position to a flow restricting position, a movable air vane connected to the throttle control for moving the throttle control, and a fan for forcing air against the air vane and for urging the throttle control to the flow restricting position.