Abstract:
Certain intervals are determined in which output signals from an exhaust gas sensing device are sensed, and then applied to a control circuit, to control the fuel supply system (carburetor, or fuel injection system) in such a direction that a predetermined ratio of fuel and air is being supplied to the engine to provide exhaust gases of predetermined composition. The intervals are determined by a logic circuit which has applied thereto engine operating parameters such as operating time of the engine after having been started, engine speed, engine power condition (idling, or supplying power), engine temperature, or the like.
Abstract:
Method and installation for the predetermined addition of secondary air used in effecting optimum combustion of internal combustion engine exhaust gases, including a control arrangement including one or more measuring devices sensing engine operating or exhaust gas contents and, in response to the sensed conditions, regulating the addition of secondary air in order to obtain optimum exhaust gas combustion.
Abstract:
Certain intervals are determined in which output signals from an exhaust gas sensing device are sensed, and then applied to a control circuit, to control the fuel supply system (carburetor, or fuel injection system) in such a direction that a predetermined ratio of fuel and air is being supplied to the engine to provide exhaust gases of predetermined composition. The intervals are determined by a logic circuit which has applied thereto engine operating parameters such as operating time of the engine after having been started, engine speed, engine power condition (idling, or supplying power), engine temperature, or the like.
Abstract:
A drive unit equipped with an internal combustion engine and with an automatic change-speed transmission connected in the output of the engine, in which the vacuum in the suction pipe of the internal combustion engine operating with externally controlled ignition varies with engine load, and in which a modulating control magnitude influenced by the vacuum for the control of the shifting servo-motors and/or for changing shifting the servo-force is utilized in the change-speed transmission as a function of the engine load; in case of an ignition adjustment toward a ''''delayed'''' ignition for purposes of decontamination of the exhaust gases, the modulating control magnitude is correspondingly influenced to provide a modulating control magnitude corresponding to the reduction of the engine torque which has been established as a result of the adjustment of the ignition toward a ''''delayed'''' ignition.
Abstract:
In an afterburner installed in an engine exhaust system, a temperature sensor is positioned to establish when the temperature in the afterburner exceeds a predetermined value so that the engine intake system can be placed in communication with the atmosphere and the connection between the accelerator pedal and the throttle valve can be broken off. Consequently, the fuel supply to the engine is interrupted and the afterburner is cooled by the introduced air.
Abstract:
A control system for an engine system which utilizes solid oxygen-ion electrolyte oxygen sensing means to generate an electrical signal responsive to the oxygen content of exhaust gases of the engine which in turn is used to control regulating means to vary the character of the exhaust gases issuing from the engine. In a preferred embodiment, the oxygen sensing means is disposed upstream from a catalytic reactor and this establishes means to control the nature of the gases entering such reactor in order to maximize the effect of said reactor. Specifically, the oxygen-ion electrolyte oxygen sensing means may comprise a first and second electrode means connected to the regulating means and spaced by a stabilized solid oxygen sensitive electrolyte, such as zirconia stabilized with calcia, with the first electrode means being in communication with the exhaust gases and the second electrode means being in communication with a reference gas such as atmospheric air.
Abstract:
Air and fuel are applied to the inlet manifold of an internal combustion engine over a first path, the amount of air being controlled in accordance with a command input, for example to control operation of the engine. The oxygen content in the exhaust gases is measured and additional air is applied to the inlet manifold of the engine over a second path, the amount of additional air being supplied over the second path being controlled in accordance with (a) the amount of air admitted through the first path and, additionally, (b) in accordance with the measured oxygen content of the exhaust gases.
Abstract:
A device for controlling the air-fuel ratio in an internal combustion engine wherein the rate of fuel flow from the float chamber to the air stream in the venturi of a carburetor is modified by a pressure modifying tube joining the float chamber and the venturi, a valve in said tube being responsive to the thermal conductivity of the exhaust gases in the exhaust pipe of the engine.
Abstract:
Apparatus for the predetermined addition of secondary air used in effecting optimum combustion of internal combustion engine exhaust gases, including a control arrangement including one or more measuring parameters sensing engine operating or exhaust gas contents and, in response to the sensed conditions, regulating the addition of secondary air in order to obtain optimum exhaust gas combustion.
Abstract:
A fuel-metering unit adapted for use in an internal combustion engine having an exhaust pipe is described which unit comprises an air-intake suction tube, a randomly adjustable throttle valve therein, an air-measuring device mounted in the suction tube upstream of the throttle valve, by-pass means connected with the suction tube and bypassing the air-measuring device and means for metering fuel in amounts substantially proportional to the amount of air flowing through the suction tube. This unit is improved by providing control valve means associated with the by-pass means and adapted for controlling the by-pass means and thereby varying the proportionality of fuel and air in dependence on characteristic engine data, and by providing an exhaust gasmeasuring probe adapted for mounting in the exhaust pipe of the engine and adapted for controlling the control valve means.