摘要:
To remove solid particles such as soot, aerosols, and the like, from the exhaust gas of an internal combustion (IC) engine, for example a Diesel engine, the solid particles and aerosols are first charged in an electrostatic field which is generated between a solid surface (2), preferably cylindrical, and pointed discharge elements, typically electrostatic spray disks (3). The solid particles will adhere together, and to the surface, to form--with respect to the original dust and soot particles and aerosols, large area flakes and agglomerates which are carried along by the gas flow, and are then separated out in a mechanical separator (7, 15, ).
摘要:
An incandescent ignition arrangement for an internal combustion engine is combined with a fuel-injection device and has an ignition chamber formed as an annular space coaxial with and surrounding the fuel-injection device, an overflow passage rising toward a reference plane extending normal to the longitudinal axis of the fuel-injection device and having a component which extends tangentially to a periphery of the annular space and is open into the latter, and the overflow passage extends to the reference plane at an angle selected such that an extension of the axis of the overflow passage lies inside a fuel injected from the fuel-injection device, and the arrangement has an electrically heatable ignition element lying inside the contour of the ignition chamber.
摘要:
A rotary positive-displacement pump in which the vane or vanes separating the chambers are locked in the inner dead center point after a certain outlet pressure has been attained, in order to shut off the pump. A corresponding locking apparatus has a detent which assures that each vane is locked in a form-locking manner in the position which shuts off the pumping action. Preferably, the locking apparatus has an overstroke step by means of which it is assured that each vane is constantly held at an increased distance from its sliding surface so that friction and impact noises are positively avoided.
摘要:
Rapid movement of the gas pedal initiates a shifting operation to the next higher or next lower gear depending upon whether the speed of the gearing lies above or below a predetermined speed range. The speed range extends from a first to a second predetermined speed. Both the width of the range and the actual values of the first and second predetermined speed are automatically adjusted as a function of the throttle valve position and the then-present gear. If the gas pedal is not activated but the gear speed is less than a predetermined first threshold speed, an automatic down-shift takes place. Up-shifting can only occur when the speed of the gearing exceeds a minimum up-shift speed. Engagement and disengagement of the clutch is controlled and may include jolt limiting. The engine speed is limited during gear shifting.
摘要:
An internal combustion engine is equipped with an air line for admitting supplementary air to the induction manifold or the exhaust manifold in order to compensate for an intentional air deficiency, so as to make the mixture stoichiometric. The air line is throttled by a pneumatically activated throttle valve which is subject to at least two control pressures, one of these being the atmosphere or a constant pressure and the other being, for example, the induction tube vacuum. The termini of the two lines which admit these control pressures are so disposed in the valve as to be jointly openable and closable, in opposite phase, by an electromagnetically controlled valve-closing leaf-spring. The electromagnet is energized by a current of variable frequency, the frequency being dependent on the exhaust gas composition as monitored by an oxygen sensor.
摘要:
A fuel metering system of an internal combustion engine is regulated by a data processor which has stored data prescribing the proper amount of fuel to be metered out for particular positions of the throttle valve and for particular values of the engine rpm. This preliminary adjustment is further refined by providing the data processor with feedback data concerning actual engine operating parameters, e.g. the exhaust gas composition, engine speed fluctuation and temperature. The feedback data is used by the data processor to override and further adjust the fuel quantity metered out to the engine.
摘要:
A motor vehicle is equipped with a heater assembly in which hot coolant from the engine is circulated through a first heat exchanger, normally called heater. The vehicle is also equipped with a refrigerating unit, i.e., an air conditioner, which has a second heat exchanger, or cooler, located in front of or behind the heater. Two separate temperature sensors are provided. One of these senses the compartment temperature while the other is located directly adjacent to the heater and senses the temperature of the air leaving the heater. The responsivity of this latter sensor is made substantially lower than that of the compartment sensor, i.e., its signal change per unit temperature change is lower, resulting in differential weighting. A control unit is so constructed that when the compartment temperature rises, the heater, which is normally cycled on and off in a quasi-continuous fashion, is shut off. If the temperature rises further, the controller activates the refrigerator unit and the air is cooled. If, however, the temperature now drops below the set-point without having reached the shut-off point of the two-point air conditioner control, the heater unit is re-activated. The combination of continuous heater control and two-point cooler control insures stable compartment temperatures and rapid response.
摘要:
To supervise operational effectiveness of catalytic reactors included in exhaust emission detoxification systems, an oxygen sensor is located downstream of the reactor to determine oxygen content in the exhaust gases from the internal combustion engine, the oxygen sensor comprising an ion conductive solid electrolyte forming an ion concentration chain and having catalytically inactive contacts, connected to a detection circuit which provides an output signal in dependence on a signal from the sensor, the output signal operating an alarm, or a transducer which interferes with proper engine operation to force the operator to have the reactor repaired. Preferably, two ion conductive chains are used, in a single sensor, or in two sensors, one being exposed to exhaust gases upstream of the catalytic reactor and the other downstream of the catalytic reactor, the output signals being provided to a differentially connected operational amplifier, to balance out extraneous influences.
摘要:
A device for adjusting a rotational angle relationship between a camshaft and its drive element, comprising two circular segment shells provided on the drive element together with an interposed part forming two working spaces therebetween. The both shells are connected to one of the camshaft and the drive element, and the interposed part being connected to the other of the cam shaft and the drive element while the circular segment shells being movable relative to the interposed part in a setting action such that during adjustment in the setting direction the circular segment shells are adjusted so that the volume enclosed in a first one of the working spaces increases while the volume enclosed in a second one of the working spaces decreases. Each of said working spaces are connected to a first setting pressure medium source separately via a non-return valve which opens toward a respective one of the working spaces, and the working spaces can be directly connected to one another by means of a control valve. A third circular segment shell is provide and forms with a first one of the circular segment shells a third working space for an additional adjustment of the rotational angle relationship.
摘要:
A hydraulic valve control with a (hydraulic) fluid reservoir allocated to a pressure chamber of a magnetic lifter, with a reservoir piston, reservoir, and reservoir spring, in which the pressure chamber is arranged between a cam piston actuated by the driving cam and a valve piston, the latter acting in conjunction with the engine valve, and in which the cam piston is configured as a hollow piston, in the cavity of which the fluid reservoir is arranged.