Pierburg Gmbh & Co Kg

Pierburg Gmbh

Pierburg Gmbh & Co.

Rainer Sudbeck

Hans Baumgartner

Manfred Brandstadter

Ulrich Henke

Eckehard Schmitz

An internal combustion engine is provided with a volume-displacement supercharger. The supercharger has an interior with an inlet or suction side and an outlet side. An injection nozzle is located within a passage located directly in the supercharger and directs fuel into the supercharger interior at the suction end of the interior.

Internal combustion engine having an injection nozzle for mixture

A displacement machine for a fluid comprising a housing including a spiral wall containing a displacement body including a spiral wall engaged with the spiral wall of the housing to form chambers therewith. The spiral wall of the displacement body extends over an angle greater than 360.degree. to provide overlapping first and second ends and the spiral wall extends axially on both sides of a transverse disc. The center of the displacement body is rotated around a closed circular path, and a crank arm is pivotably connected to the housing at a first pivot axis and to the displacement body at a second pivot axis in the region of the spiral wall of the displacement body. The transverse disc has a radial terminal edge extending between the overlapping first and second ends of the spiral wall of the displacement body. The disc travels in a slot in the spiral wall of the housing and the terminal edge is shaped in correspondence with the path of movement of the disc relative to the housing so that the distance between the terminal edge and the edge of the slot remains substantially constant at least during one-half of the travel of the displacement body along the closed circular path.

Displacement machine having a housing and piston with spiral walls

A positive displacement rotary gas compressor pump comprising a ring piston having an annular wall with a gap forming confronting inlet and outlet ends, the outlet end, during the compression of the gas in the inner and/or outer pumping chambers, cooperating with a bridging wall portion joining two concentric cylinder walls, or with the end of the inner cylinder wall near its transfer port, so that the gas is compressed before being discharged from the pump.

Positive displacement rotary gas compressor pump

A positive displacement rotary pump based on the spiral principle in which the piston is given a complex orbital motion by a crankshaft drive, the piston being also pivoted to a second guide element, this pivot point reciprocating along an open path. The second guide element is constructed to provide compactness and ease of manufacture.

Rotary spiral wall pump with pivotably connected guide means and

In a vane pump a hollow cylindrical rotor (7) is mounted for rotation about its axis within a housing (1) and is arranged to be driven by a belt driven pulley (54) mounted on one end (19) of the rotor. Extending eccentrically within the rotor (7) is a shaft (11) which has its opposite ends (10) and (24) fixed in passages (9) and (23) respectively in the end portions (5) and (15) of the housing (1) so that the shaft (11) is not rotatable. The vanes (27) of the pump are rotatably mounted on the shaft (11) so that they extend axially of the shaft and project radially through axially extending openings in the cylindrical wall of the rotor (7). The vanes (27) are thereby rotated on the shaft (11) when the rotor is driven, and the portions of the vanes projecting through the cylindrical wall of the rotor sweep a pump chamber (13) surrounding a portion of the rotor to convey fluid from an inlet to an outlet of the pump.

Rotary vane pump with clutch

In a method of regulating the delivery of the combustion fluid (i.e. air or mixture of air and fuel) to an internal combustion engine (1), the combustion fluid is conducted through a gas engine or positive displacement device capable of operating as a fluid motor or a fluid compressor (2) which is drivingly coupled with the internal combustion engine, and the flow rate through the device (2) is varied in the sense of the desired load change by means of a control device (3, 23) on the device. The positive displacement device (2) may be operated as a fluid motor and/or as a supercharger. As a fluid motor the work done by the expansion of the combustion gas is used to assist the engine (1), whereas the engine (1) drives the gas engine (2) when operating as a supercharger. In a preferred embodiment the device (2) is of the rotary vane type (FIG. 3) and the rotational speed ratio between the internal combustion engine (1) and the device (2) is fixed, the fluid flow rate being varied by a control device which has a displaceable control edge (22) in the gas inlet region (5) of the device for varying the intake volume and which is moved by an actuating lever (15) linked to the load regulator of the internal combustion engine (1). In the embodiment of FIG. 3, the control device comprises a segment (23) of the casing (19) bounding the working space (20) of the gas engine, the segment being rotatable about the vane axis (11). The control edge (22) is formed by one end of the segment (23), and a further control edge (24) may be formed at its opposite end for operating in the gas outlet region (21) if the engine (2) is required to operate as a supercharger in an upper load range.

Method of regulating the charge of combustion gas delivered to an

In a coupling for a drive device, such as an internal combustion engine, a rotor and an entraining disc are connected. The entraining disc is movable relative to a drive disc so that it can be selectively coupled with the drive disc. A housing at least partly encloses the drive disc and supports a pressure chamber adjacent the entraining disc. The pressure chamber includes a movable cover interconnected with the entraining disc. By regulating the pressure within the chamber, the entraining disc can be coupled or decoupled relative to the drive disc. When coupled to the drive disc, the entraining disc drives the rotor.

Clutch for work arrangements, particularly on internal combustion

In an internal combustion engine a rotary gas motor, driven by the intake gas of the engine, drives pump providing secondary air to the engine exhaust at low engine load, and at high load a clutch connects the pump and the motor to the engine shaft, the output of the pump and the motor being delivered to the engine intake.

Method of generating gas pressure in an internal combustion engine, and

A method and an arrangement for controlling exhaust return quantities of an automatic-ignition, internal combustion engine comprising a camshaft-driven piston injection pump and an exhaust control element in an exhaust return pipe. Pressure pulses occurring in an output pressure line of the injection pump during the injection-active delivery stroke are directly or indirectly detected as regards their pulse duration as the injection duration T.sub.E and their pulse intervals as the injection period T.sub.P. A certain injection stroke or a certain quantity of fuel to be injected per work cycle may be assigned, pump-specific, to each pair of values of these quantities through a known pump stroke curve. To control the return quantity of exhaust in dependence upon the quantity of fuel injected, the dependence between the pairs of values of T.sub.E, T.sub.P on the one hand, and control quantities for the return quantities of exhaust on the other hand, are stored in an at least two-dimensional identification field. Accordingly, it is possible for each pair of values of T.sub.E, T.sub.P determined in operation to retrieve the associated control quantity for the return exhaust quantities and to use that control quantity for controlling an exhaust control element. If the reciprocal value of the injection period T.sub.P is proportional to the rotational speed, other operating parameters, such as pressures and/or temperatures, may also be taken into consideration in the determination of the particular control quantity for the return quantities of exhaust.

Method of and an arrangement for controlling return quantities of exhaust

A piston pump, for use for example for operating auxiliary mechanisms in motor vehicles, has a piston 1 which is reciprocated in a cylinder 2 by an eccentric 20 and a return spring 18. The cylinder 2 has an outlet valve 23, and inlet openings 4 in its side wall. Instead of moving the piston 1 so far downwards in the suction stroke of the pump that the piston head 6 L is below the inlet openings 4 to allow fluid to flow into the pump chamber 10, the piston is provided with a peripheral groove 13 and openings 11 in its side wall. The openings 11 lead to a recess 17 in the piston head and hence to the pump chamber 10. The groove 13 moves into communication with the inlet openings 4 at two separate times in each to and fro movement of the piston, that is in each pumping cycle, so that the fluid being pumped can only flow into the pump chamber from the inlet openings 4 during these two times. This arrangement provides a more accurate control of the pump output in dependence upon its speed than does the prior arrangement in which the pump chamber 10 is in direct communication with the inlet openings 4 when the piston is at bottom dead-center.

Growing community of inventors

Duisburg, Germany

Rainer Sudbeck