Abstract: Systems have been used to combine exhaust gas and blow-by for internal combustion engines. The mixing of the oily blow-by and the exhaust, however, has caused carbon particles to cake within the walls of intake passages and near intake valves. The subject exhaust gas and blow-by recirculation system overcomes this deficiency by inducing the oily blow-by within a passage of a cylinder head. The passage is located in close proximity to one of the plurality of combustion chambers such that the high velocity or flow rate of the intake air reduces the time and effect of the reaction between the hot exhaust gas and the oily blow-by. The subject exhaust gas and blow-by system utilizes a director tube extending through a bore of the cylinder head. The director tube is orientated to enable the flow of blow-by to enter the intake air in line with the flow path.

Abstract: An air intake side secondary air supply system for an internal combustion engine provided with an air/fuel ratio feedback control operation, comprises a pressure responsive air control valve which controls the communication through a secondary air supply passage, i.e., the amount of the air intake side secondary air supplied to the engine. A first control pressure for opening the air control valve and a second control pressure for closing the air control valve is alternately supplied to the air control valve in accordance with a detected state of the air/fuel ratio of the engine. The system is further provided with a device for respectively controlling the speed of the supply of the first and second control pressure, which in turn causes the variation of the speed of the air/fuel ratio control.

Abstract: A servo control which adjusts the supply of combustion diluent (either excess air or EGR) upwards until the statistical variation of flame speed achieves a set limit. The system is intended as a control coefficient input to an automatic control system capable of more rapid dynamic response than the roughness controller itself. For engines characterized by exceptional homogeneity and in-cylinder flow control, control of flame speed variability up to set limit nearly minimizes NO.sub.x emissions and very nearly optimizes fuel efficiency at all engine speeds and loads. Two "measures" of flame speed are disclosed, first peak blowdown pressure in the exhaust, and second, the ionization breakdown voltage of an additional spark fired a specified number of crank angles after the ignition spark.

Abstract: A fuel injection device for supercharged engine including a supercharging blower located in the intake passage upstream of the throttle valve. The fuel injection device includes a fuel injection valve located downstream of the throttle valve. An air bleed system is provided so as to inject bleed air to the fuel injected from the fuel injection valve. The air bleed system includes a bleed air passage having an upstream end opening to the intake passage between the supercharging blower and the throttle valve so that any backflow through the bleed air passage can be prevented even under a heavy load engine operation.

Abstract: Novel and special lighting effects are furnished to an ornamental harness comprising a plurality of decorative transparent or translucid devices each having a light bulb internally arranged thereto, by connecting said light bulbs in parallel with lighting effects generating means which comprise a power supply, wave generating means including a square wave generating circuit and a triangular wave generating circuit connected in parallel to said power supply, ramp generating means connected in series between said power supply and said wave generating means, frequency selecting means coupled to said wave generating means for selecting a desired frequency for the waves generated thereby, waveform selecting means coupled to said wave generating means for selecting between said square wave and said triangular wave generating circuits, and power amplifying means connected between said waveform selecting means and said parallel connected light bulbs for supplying amplified current waves to said light bulbs.

Abstract: This invention is concerned with an exhaust valve for Diesel engine and a method thereof, in which a seat of the exhaust valve is formed with coated layer comprising ceramics and metals, the layer becoming thicker in density of ceramics as coming nearly to the surface thereof. The seat may be formed with the coated layer by subjecting to pressing-heating treatment after coating. This kind of the exhaust valve is provided by coating ceramics and metals onto a seating portion of the mother material such that ceramics becomes thicker in density as advancing to the surface, and heating the coated layer in electric conductivity while pressing the layer with the tool in non oxidizing atmosphere.

Abstract: A method and an apparatus are proposed for adapting the exhaust gas recirculation rate in internal combustion engines, in particular Diesel engines. In order to prevent the smoke which is produced at first in new engines, or when injection nozzles or the like are replaced, an adjustment is made in the exhaust gas recirculation rate, acting as a supplement to the change in this rate which is conventionally made, the supplementary adjustment being preferably performed in stages and with reference to the function of the duration of operation from the time the varying operating conditions begin. The number of injection events is counted and successive memory locations are triggered at time intervals, effecting an adaptation of the exhaust gas recirculation rate up to the final status, each stage in adaptation being stored permanently in memory as it is attained.

Abstract: A system for controlling a carburetor of an engine provided with a supercharger. A passage is provided for communicating a float chamber of the carburetor with an intake passage through a changeover valve. A vent pipe is provided for communicating the float chamber with the intake passage. The changeover valve comprises a diaphragm, a vacuum operated chamber defined by the diaphragm, a valve body operatively connected to the diaphragm, a passage for communicating the vacuum operated chamber with the intake passage at the downstream side of the carburetor, an opening for communicating the float chamber with the intake passage, and an opening for communicating the float chamber with the atmosphere. The vacuum operated chamber and the valve body are so arranged that the valve body closes the first opening and opens the second opening at light load to communicate the float chamber with the atmosphere.

Abstract: A method for controlling ignition timing of an internal combustion engine using an electronic ignition timing control apparatus includes the steps of:(i) setting ignition timing when the engine is under load to a value determined by the amount of intake air flow and the rotational speed of the engine;(ii) setting ignition timing when the engine is at idle to a value retarded with respect to the value when the engine is under load, regardless of the amount of intake air flow; and(iii) setting ignition timing during a transition from loaded operation to idling operation to the idle value after a predetermined delay time has elapsed since the start of idling operation.

Abstract: This invention is concerned with an exhaust valve for Diesel engine and a method thereof, in which a seat of the exhaust valve is formed with coated layer comprising ceramics and metals, the layer becoming thicker in density of ceramics as coming nearly to the surface thereof. The seat may be formed with the coated layer by subjecting to pressing-heating treatment after coating. This kind of the exhaust valve is provided by coating ceramics and metals onto a seating portion of the mother material such that ceramics become thicker in density as advancing to the surface, and heating the coated layer in electric conductivity while pressing the layer with the tool in non oxidizing atmosphere.

Abstract: This invention is concerned with an exhaust valve for Diesel engine and a method thereof, in which a seat of the exhaust valve is formed with coated layer comprising ceramics and metals, the layer becoming thicker in density of ceramics as coming nearly to the surface thereof. The seat may be formed with the coated layer by subjecting to pressing-heating treatment after coating. This kind of the exhaust valve is provided by coating ceramics and metals onto a seating portion of the mother material such that ceramics becomes thicker in density as advancing to the surface, and heating the coated layer in electric conductivity while pressing the layer with the tool in non oxidizing atmosphere.

Abstract: An internal combustion engine which devises the opened direction and position of the gas outlet end of a sub-suction path provided separately from a main suction path so as to inject a gas in the circumferential direction of a combustion chamber during the suction stroke, in which the outlet end of the sub-suction path opens within such a range that, in a plane normal to the axis of the cylinder, the line extending in an opened direction of the sub-suction path is at an angle of .+-.20 to 110 degrees with respect to the line joining the center of the suction port and the axis of the cylinder; the distance between the outlet end of the sub-suction path and the face of a suction valve at its closed position is not more than the internal diameter of the main suction path; or the outlet end of the sub-suction path is positioned within a sphere with its center being a spark point of an ignition plug and with the same diameter as the internal diameter of the cylinder and within a range of .+-.

Abstract: In an electronic ignition control system utilizing a microcomputer, a reference signal indicative of a crank reference position is counted to sense the rotational speed of an internal combustion engine thereby controlling the ignition timing of the engine. In the system, a reference ignition position is computed using the sensed engine rotational speed as a parameter, and this reference ignition position is corrected using a plurality of information indicative of the operating condition of the engine including the information of the engine rotational speed as parameters.

Abstract: Several embodiments of induction systems for internal combustion engines that achieve high power outputs without sacrificing low and medium speed running characteristics or without adverse transitional effects. Each embodiment employs a pair of intake valves connecting with each combustion chamber and served by separate intake passages. A control valve is positioned at one of the intake passages and is operated so that the idle and low load requirements are primarily served by the other intake passage. An interconnecting passage interconnects the two intake passages downstream of the control valve and close to the engine valves to improve transitional performance and mid-range torque. In one embodiment of the invention the control valve is operated in response to engine speed and load as sensed in the induction system. In another embodiment an unbalanced control valve is employed that is operated by pressure differences in the induction system.

Abstract: The minimum fuel injection time is on electronically controlled fuel injection engine is set in relation to the running condition of the engine. For example, in shift change, when the throttle valve is in the idling angle and the revolution speed of the engine is high, the minimum fuel injection time is set to a small value to improve the efficiency of fuel consumption. Also, at the completion of fuel cut-off when the revolution speed of the engine is low, the minimum fuel injection time is set to a large value to improve the driveability of the vehicle.

Abstract: An apparatus and method for controlling an engine operating parameter as a function of at least one engine operating condition by predicting the value of the engine operating condition at a predetermined time in the future, determining the control signal required to establish the corresponding engine operating parameter at the future time and applying the control signal to establish the desired value at a time preceding the future time by an amount of the known system time delay.

Abstract: A charge conditioner for an Otto cycle internal combustion engine supplies hot, oxygen-free exhaust gas to premixed intake fuel and air charge in sufficient quantity to heat the charge and completely vaporize the fuel, while improving engine volumetric efficiency by filling the cylinders with a mass of exhaust gases introduced downstream of the throttle. The flow of exhaust gas to the charge is maximum from idle to approximately cruise engine power output, and is then progressively decreased up to full engine output until flow is prevented at maximum engine power output. A supplemental fuel supply system optionally adds vaporized fuel to the charge by using the hot exhaust gas as a fuel carrier to the charge intake stream.

Abstract: Rotary inlet and exhaust valves disposed within the cylinder head located at one end of at least one cylinder of a vehicle engine, the cylinder having inlet and exhaust ports, and the valves having a mechanism to feed an inlet charge to and exhaust from the respective cylinder ports along the axis of rotation of the valves. Mechanisms for reducing eddy losses, insulating the exhaust valve, and lubricating the valves by either a wet or dry lubricator, or both, is also included, as well as single and multi-cylinder variations of the valves for various vehicle engines.

Abstract: An intake system for an automotive engine having cylinders, primary intake ports communicated with the cylinders, and secondary intake ports communicated with the cylinders. Each of the primary and secondary intake ports is communicated with a corresponding cylinder at a common intake valve. A primary intake manifold communicated with the primary intake ports and a secondary intake manifold communicated with the secondary intake ports are provided. A control valve is provided in each branch of the secondary intake manifold for controlling a counter flow of induced mixture. A vacuum operated actuator opens the control valve in dependency on an increase of engine speed and load on the engine.

Abstract: A glow plug for a compression ignited or Diesel engine having a base member, an axial electrode and a heater member. The heater member comprising a conductive surface film heater element disposed on the surface of a dielectric substrate. The surface film heater element having one end in electrical contact with the base member and the other end in electrical contact with the axial electrode.