Abstract: A direct-injection, open-chamber, compression-ignition engine is designed to operate at high outputs with a minimum production of oxides of nitrogen by a combination of fuel-air ratios, air-delivery swirl, fuel injection rates and pattern and diameter and configuration of combustion chamber whereby noxious emissions are substantially reduced.

Abstract: An ignition timing control device comprising a vacuum advance mechanism of the type controlling the ignition timing in response to the negative pressure in a carburetor, a negative pressure line between the carburetor and the vacuum advance mechanism, and a thermostatic valve for opening the negative pressure line to the surrounding atmosphere only when the temperature of an engine is within a predetermined temperature range.

Abstract: The airflow rate through the induction tube of an internal combustion engine is measured by a first transducer which delivers a set point signal to a control amplifier. The amplifier also receives a feedback signal from a second transducer which monitors the position of a servo-motor controlling the quantity of fuel metered out to the engine. The feedback loop maintains a desired fuel-air ratio and includes provision for calibration and adjustment.

Abstract: Auxiliary spark gaps with magnetically or electromagnetically controllable gap spacing and gas-filled envelopes are used for distributing ignition pulses to the sparkplugs of a multicylinder internal combustion engine. A moving permanent magnet sequentially reduces the gap width in the firing order in a magnetically operated system. In an electromagnetically operated system, each gap device has a control and a switching circuit operating at low voltage and energizing the coils in turn.

Abstract: A fuel-air metering and induction system for an internal combustion engine including an electronic controlled pressurized carburetion system wherein a carburetor mounted on top of the intake manifold of an internal combustion engine is provided with one or more throttle valves to regulate the flow of induction fluid therethrough with a mass airflow meter including an air metering valve mounted on a shaft for rotation in the induction passage positioned upstream thereof, the air metering valve shaft having a cam thereon to actuate the metering rod of a fuel metering valve to control the delivery of fuel to a fuel atomizing nozzle discharging fuel into the induction stream immediately downstream of the throttle valves, the fuel metering valve being supplied with high pressure fuel from an electrically controlled, high pressure fuel pump, the output pressure and therefore volume of fuel delivered to the fuel metering valve being regulated as a function of electrical signals received which are indicative of vario

Abstract: An electronic fuel injection system for an internal combustion engine wherein the amount of fuel injected is metered according to variations in the injection pressure. Mechanical injectors having a preset opening pressure are fed from a distribution chamber which, in turn, is fed by a fuel circuit pressurized by by an electronically controlled fuel supply flow. The fuel supply flow is the difference between the flow through an inlet injector receiving fuel under pressure and that through an outlet injector regulating the return flow of fuel to the reservoir, these injectors being of the continuous flow electromagnetic type. The fuel supply is frequency controlled by a computer and regulated by a servo loop to assure a constant richness. The preferred embodiment is particularly adaptable to a low priced electronic fuel injection system using mechanical devices whose precision is relatively unimportant.

Abstract: In a fuel injection system for internal combustion engines an exhaust gas sensor is periodically tested under controlled engine operating conditions for the purpose of detecting any failures in this sensor. The failure detection system generates an electrical signal in response to a failed sensor which signal is used to inform the engine operator of the failure of the sensor.

Abstract: A tachometer and angular progression measuring system for a rotary device of the type including a pickup for producing a pulse each time the rotary device has rotated a given angle which includes a source of first pulses of a first frequency synchronized to the pulses from the pickup, means for counting the number of first pulses occurring between two successive pickup pulses, a source of second pulses of a higher frequency than the first pulses, and a means for producing output pulses whose period between two successive pulses correspond to a number of periods between successive second pulses depending on the number of first pulses counted by the counting means.

Abstract: An ignition system for internal combustion engines comprises a spark plug located remote from the combustion chamber, a metering pump which supplies a mixture of hydrogen and oxygen gases to the remote spark plug and a capillary-like tube for projecting an explosive flame front, created by the ignition of the hydrogen and oxygen gases, into the combustion chamber to ignite a vaporized fuel-air mixture.

Abstract: A circuit for controlling transient occurrences in an electronic fuel injection system in which the occurrence is sensed and used to produce auxiliary injection signals which are combined with the main injection signals from the injection system computer. The time of production and the duration of the auxiliary signals can be controlled in response to operating conditions of the engine.

Abstract: Apparatus for electronically modifying spark advance and dwell in a spark-ignited internal combustion engine. Conventional cam driven breaker points on the engine are initially set for the desired maximum spark advance. The signal from the breaker points is electronically delayed to reduce the spark advance by a predetermined constant value independent of the engine speed. Dwell is also electronically controlled to a predetermined constant value independent of the engine speed.

Abstract: An air-flow metering device for a fuel injection system of an internal combustion engine comprises a blade means installed in an intake pipe of the engine and turned by the air flowing therethrough, a blade turn detecting means and an air passing means for changing the air passing area thereof in combination with the blade means in accordance with the turning of the blade means, thereby to supply optimum air flow into the engine.

Abstract: A throttle body for a rotary engine includes an electronically controlled single fuel injector with discharge pintle that is located above and between two counterrotating throttle valves with the fuel supply, rotor lubricating oil and idle air being directed through an orifice located below the injector. An atmospheric passage is interposed between the injector and the fuel supply orifice to serve as a vacuum break, through which a conical spray pattern is directed into the orifice which has walls contoured to receive the conical spray pattern and direct it in an unrestricted fashion as a spray cone into the intake manifold of a vehicle during low intake manifold vacuum conditions. The air passage serves to direct idle air through the orifice when throttle valves are closed to produce sonic mixing of idle air and fuel during operation of the engines at a high intake manifold vacuum.

Abstract: The invention provides means to produce a spark for firing a mixture in an internal combustion, wherein the spark has a high steep voltage wave front followed by an elongated tail of lower voltage, by providing an induction coil, a capacitative voltage source and an inductive voltage source, and means for suitably applying both sources in parallel to the induction coil primary when a spark is required. Several alternative circuits are described, a capacitor providing the high voltage short duration wave front to initiate the spark, while an inductor, which may be part of a transformer supplies the longer duration low-voltage tail. The voltage to charge the capacitor may be derived by rectifying the output voltage of a step-up charging transformer.

Abstract: A flywheel alternator for use with an electronic ignition system of an internal combustion engine. The flywheel has a rotor with an odd number of circumferentially located permanent magnets each of substantially the same size and shape. The radially inward pole faces of adjoining pairs of the magnets are of opposite polarity except for one pair which is of the same polarity. At least one stationary trigger coil is positioned to form magnetic circuits with the rotor magnets by bridging alternate ones of the magnets as the rotor rotates. A unique trigger pulse suitable for activating an electronic ignition system is generated only once each flywheel revolution. A stationary power coil has a length to bridge consecutive ones of the magnets to provide power to run other electrical appliances.

Abstract: What follows is a description of a fuel metering system for internal combustion engines having a measuring probe. The probe monitors the composition of the exhaust gas and produces an output signal which is used to govern the motions of a magnetic valve which in turn regulates the amount of air mixed in with fuel prior to the admission of this mixture to the veturi in the suction tube of the carburator.

Abstract: A slurry of particulate material, such as polypropylene, and a fluid, such as propylene diluent, is introduced into a flash tank to remove a substantial amount of the fluid. The resulting particulate material is passed from the flash tank through a heated dryer to elevate the temperature of the particulate material and remove additional fluid. The temperature of the particulate material removed from the dryer is controlled by measuring the temperature of the removed material and adjusting the rate at which vapor is removed from the dryer in response to the measured temperature.

Abstract: A toner image carried upon a substrate is fixed by placing the toner image in close juxtaposition to an absorbent web carrying a volatile toner solvent. The toner particles are softened and caused to adhere to the substrate by the action of the vapors emanating from said web. In order to protect the environs from the solvent vapors, the web is enclosed within a substantially sealed housing when laden with said solvent.

Abstract: Apparatus for producing a signal representative of engine speed (RPM) for use in an electronically controlled fuel injection system. The apparatus includes means for producing a first train of pulses in which the pulse intervals are dependent upon engine speed, and a signal processor for receiving the first train of pulses and producing a second train of pulses in which the pulse intervals correspond, at least approximately, to the mean value of the pulse intervals in the first pulse train.

Abstract: A stop limits movement of a vacuum spark advance motor operating element connected to the distributor breaker plate, and the position of the stop is changed in response to selected changes in engine or vehicle speed.