Abstract: A catalytic device is disclosed, in which a catalytic layer is electrically heated and activated. In one form, the quantity of the catalytic layer is greater near a gas outlet than near a gas inlet of the device. In another form, the catalytic layer is disposed only near the gas outlet. The catalytic layer can be quickly activated so as to promote purification of exhaust emissions immediately following the ignition.

Abstract: A fuel feed control system and method for an internal combustion engine is provided with a device for setting the quantity of fuel and a fuel injector for feeding fuel in accordance with the fuel quantity set by the fuel quantity setting device. The fuel quantity setting device is provided with a device for estimating the quantity of air to be inducted on the basis of the result of detection of the quantity of inducted air at an inducted air quantity detection time, inducted air quantity information detected before the inducted air quantity detection time and predicted information. The inducted air quantity estimation device is provided with a device for changing the predicted information so that, when a transient operation state of the engine is detected by a transient operation state detector, the estimated quantity of inducted air and a real quantity of inducted air become closer to each other.

Abstract: A parameter representing a real generation amount is detected and the intake is increased based on the detected parameter instead of on-information of the switch of the electric load. Therefor, the rotation speed in idling is stabilized without excess idle-up. The controllability is excellent due to the combination with controlling the load of the alternator itself.

Abstract: A stalling preventing appartus for an engine comprising intake air amount increasing means for increasing the amount of intake air to the engine from idling condition when the vehicle is in a start preparation condition, and rotation speed increase prevention means for preventing the engine speed from increasing due to the increase in intake air amount by the intake air amount increasing means, operation of the intake air amount increasing means and the rotation speed increase prevention means being stopped when the vehicle is in a start preparation condition, whereby a sufficient amount of air is supplied to the engine at starting of the vehicle and a delay in response of the air intake system to the pressing-down operation of the acceleration pedal is eliminated to increase the output torque of the engine at clutch-on and prevent engine stalling.

Abstract: A fuel injection control apparatus comprises a load detecting means to detect a load to an engine to thereby generate a signal, a basic injection quantity operating means to operate the signal so as to obtain the pulse width of a basic fuel-injection time for a fuel injector in response to the condition of load, and a limiting means which conducts a dulling treatment to the basic fuel injection pulse width so that limitation of the fuel injection pulse width of the fuel injector in response to a value modified by the dulling treatment is determined on the basis of a limit value correction coefficient in accordance with the condition of load.

Abstract: A method and apparatus for controlling operating conditions of an internal combustion engine based upon sensed operating parameters of the engine expressed in the form of pulse signals, wherein the frequency of the pulses is representative of the sensed parameter. The pulse intervals of the sensed operating parameter signals are measured to the fractional level before being stored and employed by a CPU to calculate data applied to control predetermined operating conditions of the engine, such as the fuel flow rate and the ignition timing. The inventive method and apparatus attain greater operating stability for steady-state operations and excellent response under transient conditions of the engine.

Abstract: Stabilization of the engine speed is effected rapidly particularly during idle running because there is provided a generator control means capable of suppressing or stopping power generation of a generator driven by an engine in the event the engine speed decreases below a predetermined value. Additionally, according to the present invention it is also possible to provide means capable of adjusting the amount of intake air fed to the engine combustion chamber, whereby in the event of decrease of the engine speed, for example, during idle running it is made possible to stabilize the engine speed rapidly and surely through control of generated energy for a short time and control of the amount of intake air for a long time. Furthermore, the present invention is applicable also to an operating cylinder number control type engine capable of bringing part of cylinders into a non-operative state.

Abstract: A control unit is disclosed for controlling the driving torque of a generator driven by an engine in accordance with the number of cylinders to be operated, thereby to achieve stabilized operation. A voltage regulator is provided for varying the field current through the field coil of the generator so as to regulate the output of the generator. A circuit component including a pair of NC contacts in parallel with a resistor is connected in series between the field coil of the generator and a power source. Depending on the number of cylinders to be operated, the NC contacts are either closed to provide a low resistance path for current to the field coil or are opened to provide a high resistance path through the resistor.

Abstract: An antenna including a first elongated magnetic member having at least one diamagnetic portion and a first magnetic pole orientation, a second elongated magnetic member having at least one diamagnetic portion and a second magnetic pole orientation opposite to the first magnetic pole orientation and provided adjacent and parallel to first elongated magnetic member, a pair of third elongated magnetic members connecting the ends of the first and second elongated members to form a magnetic loop and a coil wound on each of the first and second elongated magnetic members.

Abstract: A fuel feed device for an engine capable of electronically controlling the fuel feed rate corresponding to the suction air flow rate in the intake passage, comprising an air flow rate detecting device for generating electric signals of frequencies proportional to suction air rate, a plurality of electromagnetic valves with a different fuel passage section from one another disposed at a suitable position in the intake passage and adapted so as to permit supplying through a fuel pressure regulator the fuel of a fixed pressure differential with the suction pressure near a fuel outlet, and an electric control means for driving the electromagnetic valves selectively in synchronism with or to follow the frequency of the electric signals or a divided frequency thereof in accordance with the engine operating condition. Thus an accurate and highly reliable fuel supply is achieved over a wide range of engine operating condition from idling to maximum speed operation.

Abstract: A fuel feed device for an engine capable of electronically controlling the fuel feed rate corresponding to the suction air flow rate in the intake passage, comprising an air flow rate detecting device for generating electric signals of frequencies proportional to suction air rate, a plurality of electromagnetic valves disposed at a suitable position in the intake passage and adapted so as to permit supplying through a fuel pressure regulator the fuel of a fixed pressure differential with the suction pressure near a fuel outlet, and an electric control means for driving the electromagnetic valves with a shifted phase with one another to control the respective opening times thereof in accordance with the engine operating condition. Thus the accurate and highly reliable fuel supply is achieved over the wide range of engine operating condition from the idling to the maximum speed operation.