Abstract: Apparatus for the continuous injection of fuel into the intake piping of an internal combustion engine comprises an air pump for delivering an air stream portion deviated from the engine intake pipe, a fuel pump for delivering fuel from a source, a metering device controlled in response to operating conditions of the internal combustion engine and receiving fuel delivered by said fuel pump and the air stream portion delivered by said air pump for mixing said fuel and air stream portion and delivering the same to the intake piping of the engine, in which the supply of said air stream portion to the metering device is interrupted during an operating condition of the engine, preferably a coasting condition of operation of the engine. Interruption of the air stream portion may be effected by a shut-off valve in the conduit delivering the air stream portion from the air pump, responsive to a coasting condition of the engie.

Abstract: A hydraulic dual-circuit brake system for automobiles, comprising wheel brakes positioned at the front and rear wheels, a master brake cylinder, brake lines for transmitting brake pressure from the master brake cylinder to the wheel brakes to actuate the latter, a brake pressure regulator device incorporating a hydraulically operated switching off device interposed between the rear wheel brakes and the master brake cylinder, and a brake slip regulation device including a hydraulic unit, sensors for providing a signal output representative of wheel movement behavior, and an electronic anti-skid control and regulating device responsive to the signal output for controlling the hydraulic unit to affect the brake pressure transmitted by the hydraulic unit to the switching off endangered wheel brake.

Abstract: In the representative system for continuous fuel injection described in the specification, an air pump withdraws air from the air intake line of a gasoline engine and a fuel pump delivers fuel from a fuel tank through a fuel pressure regulator to a metering device which supplies fuel as a function of the operating state of the internal combustion engine, the air withdrawn from the intake line being mixed with the fuel from the metering device. The fuel pressure regulator returns excess fuel to the fuel tank through a return line and, in order provide fast response to sudden load changes, a valve device, which can be adjusted as a function of the variations in the rate of application of the load on the internal combustion engine, is provided in the return line. The valve device is controlled according to changes in the vacuum in the intake line downstream from a butterfly valve.

Abstract: A pressure-unbalanced hydraulic amplifier valve assembly has an axially slidable amplifier piston and a control plunger axially slidably arranged in the amplifier piston with a loose fit to permit a slight radial movement thereof in the amplifier piston. For providing a tight seal in the zone of control ports arranged in the amplifier piston, the control plunger is urged in that zone radially against the amplifier piston by a transverse piston continuously exposed to the system pressure. A pressure piston engages one end of the control plunger and is exposed to an external force (such as a braking force applied by a pedal) for axially displacing the control plunger. In order to eliminate undesired axial force components from the force applied by the transverse piston, a force-transmitting ball contacts the transverse piston and an inner wall of the control plunger forming a throughgoing axial bore and constituting an axially linear track for the ball.

Abstract: For the purpose of identification of a combustion chamber producing undesirable hunting in a fuel injection combustion engine, the duration of injection of a defined injection valve is changed in such a manner that additional hunting is caused, and from the crank angle interval (KW) between the additional and the undesirable hunting, is derived, taking into account the rotational speed n of the engine, an identification signal for the combustion chamber to be identified. The identification signal is utilized to change the fuel injection time for the combustion chamber causing the uneveness to eliminate the latter.

Abstract: An expansion hose having a central internal throttle element dividing the interior of the hose into two chambers, and an internal hose extending from the expansion hose inlet through one of the chambers and the throttle element into the second chamber. The portion of the inner hose within the first chamber has radial throttle passages, and the portion within the second chamber is imperforate.

Abstract: In the particular embodiments described in the specification, an all-wheel drive system is disclosed wherein either the wheels of both the front axle and the rear axle of a vehicle are driven continuously and the front axle and rear axle can be rigidly coupled with each other, or wherein the wheels of only one axle are driven continuously while the drive for the wheels of the second axle can be obtained automatically by means of a viscosity clutch arranged in the driving train between the front axle and the rear axle so that the front and the rear axles are coupled with each other essentially rigidly according to the torque. In addition, one or more coupling devices are provided which are constructed so that a decrease in the rotational speed of the front wheels, caused in particular by the actuation of the service brake, cannot be transmitted through the driving train to the rear wheels.

Abstract: A motor vehicle transmission includes a torque converter and planetary gear arrangement. Clutches are provided for connecting the torque converter with the gear arrangement. The clutches are arranged so that the direct drive transmission gear can be engaged either through the torque converter or partially bypassing the torque converter.

Abstract: In a vehicle drive with a drive engine, power control means coupled to the engine, and a multiple gear ratio transmission without a clutch or synchronizing elements, a regulating means is coupled to the power control means for unloading the engine at the beginning of the gear change and for adjusting the speed of the engine after the old gear is disengaged to a speed corresponding to a vehicle speed with the new gear engaged.

Abstract: In the particular embodiments of the invention described in the specification, a hydraulic brake pressure regulator for the hydraulic brake system of a motor vehicle is designed to provide a family of characteristic curves which are dependent upon the vehicle load (outlet pressure as a function of inlet pressure), in which each characteristic curve follows a nonlinear and constant course, so as to provide optimum conformance with the ideal braking-force distribution of the vehicle.

Abstract: In the particular embodiments described in the specification, a pressure-actuated brake system for motor vehicles with a brake slip control includes a control means electronically detecting the commencement of a brake slip control operation to provide a signal to increase the brake pressure of at least some of the other wheels which are not yet under brake-slip regulation. The pressure applied to those wheels is increased above the pressure inherently applied by the operator's actuation of the brake pedal at the wheel brake cylinder until such time as brake slip regulation commences at those wheels as well.

Abstract: In the particular embodiments disclosed in the specification, a cage for a roller brake freewheel consists of two annular sidewall members which are connected with each other by connecting webs extending transversely between them so as to form chambers distributed over the circumference of the cage to accommodate corresponding brake rollers and springs. The annular side wall members are made in one piece and include resilient segments which facilitate elastic yielding. The resilient segments are in the form of connecting elements and the number of resilient segments is the same as the number of chambers.

Abstract: In the particular distribution system described in the specification a first housing part has a fuel injection nozzle and an air inlet and the fuel-air mixture passes through a fluid supply line in the first housing part to a disc-shaped distribution chamber formed by a smooth surface on the first housing part and a closely spaced smooth surface on a second housing part which contains symmetrically disposed fluid discharge lines, the smooth surfaces being held in spaced relation by washers. Each discharge line has a bore which receives a hose and a hose-retaining device which urges the hose against the bottom of the bore.

Abstract: In the embodiments of the invention described in the specification, a piston and a connecting rod of an internal combustion engine have opposed approximately semi-cylindrical bearing regions partially enclosing a pin, leaving free gaps between the bearing regions to permit swivel motions of the piston and connecting rod about the axis of the pin. Two symmetrical rings which surround the pin axis retain the bearing regions against the pin. The provision of such opposed bearing regions reduces the oscillating mass of the link joint.

Abstract: A method for operating a vehicle having an automatic, continuously variable speed transmission comprising at least three control phases. During a first control phase, the engine speed is maintained at a substantially constant value while the transmission gear ratio is increased to the maximum transmission gear ratio. During a second control phase, the transmission gear ratio is maintained at the maximum transmission gear ratio while the engine speed is increased to the maximum engine speed possible at the maximum gear ratio and selected throttle valve angle. During a third control phase, the transmission gear ratio is decreased from the maximum transmission gear ratio, so that higher vehicle traveling speeds may be obtained. During the third control phase the transmission gear ratio may be rapidly changed to a ratio corresponding to maximum engine power when the accelerator pedal is placed in a kickdown position.

Abstract: Apparatus for determining rotational speed includes a sensor for generating electrical pulse signals representative of rpm in a conventional manner. The electrical pulses are converted to light pulses at the sensor and transmitted to an evaluation circuit, where they are reconverted into electrical pulses that are processed by the evaluation circuit. Interference signals that a rise during the transmission of electrical pulses to the evaluation circuit are thereby eliminated.

Abstract: In the particular embodiment described in the specification, a window pane mounting for a vehicle includes a flange on the vehicle forming a window opening, a cement bead extending between the flange and a window supported in the opening, and a resilient molding mounted on the flange and having a support structure including wire loops embedded in the resilient member joined to wire loops projecting through the cement bead, and a continuous wire joining the portions of the loops projecting through the cement bead so that the cement bead will be severed when the molding is removed from the flange.

Abstract: A hybrid drive for a vehicle includes an electric engine supplied with energy from an electrical storage device and capable of returning energy back to the storage device. The electric engine is connected with a driving axle of the vehicle by a first disconnecting clutch and to an internal combustion engine arranged in series therewith by a second disconnecting clutch. Operation of these clutches can be independent of each other. In order to save fuel the internal combustion engine is not supplied with a dedicated flywheel, but instead utilizes the rotating masses of the drive between the disconnection points of the two clutches, e.g., the rotating elements of the electric engine, as a flywheel.

Abstract: A vehicle having an engine which is stopped during selected operating states and a generator having counterrotating members. One of the counterrotating members is connected to the engine and the other counterrotating member is connected to the wheels of the vehicle. The generator may be driven by either the engine or the wheels.

Abstract: A .[.pneumatic.]. .Iadd.hydraulic .Iaddend.control system is disclosed for an automatic transmission for a vehicle of the type having a mechanical planetary gear train with hydraulically actuatable gear elements. A manual control valve dependent upon the position of the transmission gear select lever conveys a pressure medium, for actuating a gear shift element associated with the selected gear when said lever is moved to one of the forward gears of the transmission, through a pressure medium line connected between the manual control valve and the gear shift element. The control system comprises a main control valve dependent upon the position of the accelerator pedal for exhausting the fluid in the gear shift element for disengaging the gear shift element in operating states of the vehicle at least when the vehicle is stationary, the transmission gear select lever is moved to the drive position (D), and the accelerator pedal is released.