Patents by Inventor Gerhard Stumpp
Gerhard Stumpp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5816220Abstract: In a process and in a device for monitoring a fuel delivery system, in particular a common rail system for a diesel engine, a defect in the delivery system is found when a signal from a temperature sensor and/or a pressure sensor deviates from a predetermined value.Type: GrantFiled: April 30, 1997Date of Patent: October 6, 1998Assignee: Robert Bosch GmbHInventors: Gerhard Stumpp, Johannes Locher, Claus Maier, Jurgen Biester, Werner Teschner, Wilhelm Eyberg, Jochen Neumeister
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Patent number: 5218939Abstract: The invention is directed to an arrangement for controlling the engine speed and especially the idle engine speed of an engine of a motor vehicle. The pregiven idle engine speed desired value is controlled in dependence upon the road speed of the motor vehicle so that this desired value becomes greater with increasing road speed.Type: GrantFiled: February 20, 1992Date of Patent: June 15, 1993Assignee: Robert Bosch GmbHInventor: Gerhard Stumpp
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Patent number: 5119300Abstract: Sensors for motor vehicles emit a base signal when the variable which they measure takes on a base value. For example, a road-speed transducer supplies no pulses when either the vehicle is at standstill or when the sensor is defective. A method for providing a reliable operation of a motor vehicle includes the step of starting a substitute/emergency-function immediately when only the base signal is received from the sensor. If it is later determined that the base signal was only emitted because the measured variable took on its base value, then the substitute/emergency-function is again reversed. By starting a substitute/emergency-function basically always when a checked sensor emits no signal, it is ensured that safety measures are taken as rapidly as possible.Type: GrantFiled: July 12, 1990Date of Patent: June 2, 1992Assignee: Robert Bosch GmbHInventors: Ralf-Michael Bartke, Gerhard Stumpp, Dieter Seher, Hermann Kull
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Patent number: 5036808Abstract: In a diesel internal combustion engine comprising an air intake pipe and a throttle valve arranged in the latter, the throttle valve is equipped with a drive in order to prevent operating states which are dangerous for the internal combustion engine, e.g. uncontrolled exceeding of the allowable maximum speed due to disturbances. The drive holds the throttle valve open during trouble-free operation and moves it into a closed position during disturbances. The closed position of the throttle valve is determined in such a way that the remaining reduced air flow cross-section throttles the combustion air passing through to such an extent that the internal combustion engine still runs securely at idling speed and does not exceed a predetermined speed during feeding of a desired quantity of fuel.Type: GrantFiled: September 28, 1989Date of Patent: August 6, 1991Assignee: Robert Bosch GmbHInventor: Gerhard Stumpp
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Patent number: 4905645Abstract: To monitor the functioning of a redundant safety fuel shut off valve in a diesel engine, the electric power supply for a controlling device for the fuel quantity adjustor of a fuel injection pipe is decoupled from the power supply for the control of the electromagnetic fuel shut off valve. A relay controlled by a driving switch of the engine has a contact whose opening is time delayed relative to the opening of the driving switch. The relay contact is connected for energizing the controlling device for the fuel quantity adjustor whereas the energization and deenergization of the fuel shut off valve is effected immediately via a decoupling member. When the driving switch is opened and the engine is running during the given time delay interval, an error signal is generated indicating a malfunction of the fuel shut off valve.Type: GrantFiled: January 23, 1989Date of Patent: March 6, 1990Assignee: Robert Bosch GmbHInventors: Bernhard Bonse, Werner Fischer, Gerhard Stumpp
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Patent number: 4811711Abstract: A fuel injection pump for internal combustion engines, in particular an in-line injection pump for Diesel engines, is proposed having an injection quantity governor and an electrically driven feed pump, in which in order to assure an emergency shutoff in the event of a malfunction of the injection quantity governor, a check valve, the forward flow direction of which is toward a suction chamber filled with fuel by the feed pump, is disposed between the pressure-side outlet of the feed pump and the suction chamber. An emergency shutoff device responding to a malfunction switches off the feed pump drive, so that because of the lack of feed pressure the check valve closes and blocks off the suction chamber. The engine comes to a stop, as soon as a partial vacuum is established in the suction chamber, which occurs as soon as several revolutions later.Type: GrantFiled: June 29, 1988Date of Patent: March 14, 1989Assignee: Robert Bosch GmbHInventors: Gerhard Stumpp, Wolf Wessel
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Patent number: 4811710Abstract: A fuel injection pump for internal combustion engines having a hydraulic control mechanism includes a control cylinder with a control piston actuating a control member, a hydraulic work chamber and one switching valve each for an input and an output controlled by a valve control unit. The inflow to and return from the work chamber is provided with the control valves in order to shut down the engine upon a shutoff or a malfunction in the hydraulic control mechanism. The fuel feed pump is electrically driven, and the hydraulic work chamber communicates with the fuel tank via a relief device. The supply of current to the valve control unit and the feed pump is switched on and off, along with the rest of the current supply to the engine, via a driving switch. Additionally, the valve control unit is embodied such that upon the appearance of a persistent control deviation of the control member, the valve control unit shuts off the feed pump.Type: GrantFiled: July 18, 1988Date of Patent: March 14, 1989Assignee: Robert Bosch GmbHInventors: Alfred Schmitt, Gerhard Stumpp, Dietrich Trachte, Wolf Wessel
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Patent number: 4763631Abstract: A fuel injection pump of the distributor type in which to attain low injection rates in the idling range, longitudinal slits or longitudinal conduits are provided in the jacket face of the pump piston in accordance with the number of supply strokes of the pump piston. The slits or conduits are in continuous communication with an annular groove and the adjoining annular slide which is the quantity adjusting device of the fuel injection pump. The slits on conduits come in turn into communication with a control opening during the supply stroke of the pump piston via which opening the pump work chamber can be relieved whenever in the course of the pump piston stroke movement a second outlet opening of a relief conduit extending in the pump piston and communicating with the pump work chamber, comes into communication with the annular groove.Type: GrantFiled: December 17, 1987Date of Patent: August 16, 1988Assignee: Robert Bosch GmbHInventors: Wolfgang Fehlmann, Gerald Hofer, Dieter Junger, Gerhard Stumpp
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Patent number: 4762107Abstract: An electronic control device is proposed for manipulated variables of an internal combustion engine having self-ignition. In this device, an injection duration signal is utilized as a load signal. While the injection onset signal can be satisfactorily detected via the opening speed, the hysteresis signal is efficaciously utilized to detect the signal for the end of injection. The proposed solution makes it possible to detect and regulate both the injection onset and the fuel quantity, using only a single transducer in the injection valve, on or in the fuel line, or on the pumping element, and this load signal is available for generalized uses in the control device. It is furthermore possible to obtain an rpm signal on the basis of the signal for injection onset and/or end, and to process it further.Type: GrantFiled: December 2, 1983Date of Patent: August 9, 1988Assignee: Robert Bosch GmbHInventors: Gunter Schoneck, Gerhard Stumpp, Wolf Wessel
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Patent number: 4727848Abstract: A controlling device for controlling the supply of gases into combustion spaces of a self-igniting internal combustion engine includes a control member for regulating the flow of returned exhaust gas and an air throttle for regulating flow of sucked in air. The air throttle and the control member are linked to pneumatic setting motors which in turn are controlled by pressure transforming means operating with a source of a reference pressure and a source of control pressure. An output of the pressure transforming means is provided with electrically controlled switching means which selectively actuate respective setting motors. The electric control of the pressure transforming means and of the connecting means is made in dependency on operational variables of the engine.Type: GrantFiled: August 3, 1987Date of Patent: March 1, 1988Assignee: Robert Bosch GmbHInventors: Gerhard Stumpp, Wolf Wessel
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Patent number: 4686830Abstract: An automatic control for an adjustable turbosupercharger in the air supply of an internal combustion engine adds a static anticipatory control signal and a dynamic anticipatory control signal to the error signal that is provided to an actuating mechanism for the control of the supercharger. The error signal is obtained by comparing actual charging pressure with a reference charging pressure for one portion of the control displacement and in the other portion of the control displacement the error signal is obtained by comparing actual air quantity supplied to an engine cylinder with a reference air quantity. This results from a limiting device interposed in the charging pressure control loop. The static anticipatory control depends on engine speed and engine load and is supplied with additive corrections for engine temperature and for battery voltage.Type: GrantFiled: September 30, 1985Date of Patent: August 18, 1987Assignee: Robert Bosch GmbHInventors: Rainer Buck, Wolf Wessel, Gerhard Stumpp
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Patent number: 4671232Abstract: A fuel injection system functioning with a reservoir, in which a quantity received by the reservoir is injected after the termination of pump supply for the purpose of prolonging the injection time.Type: GrantFiled: March 20, 1981Date of Patent: June 9, 1987Assignee: Robert Bosch GmbHInventors: Gerhard Stumpp, Wilfried Sautter, Wolf Wessel
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Patent number: 4667633Abstract: The invention is directed to a correcting arrangement for a fuel metering apparatus of an internal combustion engine by means of which permanent offsets of the positioning control loop of the fuel metering apparatus of the internal combustion engine are corrected. This is accomplished in that at a specific load condition of the internal combustion engine, preferably in the overrun mode of operation subsequent to the idle speed control characteristic, the actually injected fuel quantity which is a diesel engine, for example, is preferably measured by means of the movement of the nozzle needle of the injection valve of the fuel metering apparatus, is checked to a known value, in the example cited preferably for zero value, and in that the result of this check is used to influence the control system of the fuel metering apparatus of the internal combustion engine.Type: GrantFiled: November 13, 1984Date of Patent: May 26, 1987Assignee: Robert Bosch GmbHInventors: Gerhard Stumpp, Wolf Wessel
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Patent number: 4597265Abstract: The air charge pressure sensor of the control system for a turbo supercharger of an internal combustion engine measures absolute charge pressure, but is used, in the idling condition of the engine, to measure atmospheric pressure, which is stored when the engine is idling for deriving the relative charge pressure for the control system.Type: GrantFiled: October 9, 1985Date of Patent: July 1, 1986Assignee: Robert Bosch GmbHInventors: Rainer Buck, Wolf Wessel, Gerhard Stumpp
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Patent number: 4589596Abstract: A nozzle holder for internal combustion engines is proposed, in which a sleeve can be secured in the cylinder head by means of a tightening nut. The sleeve protects the portion of the nozzle which protrudes into the combustion chamber from thermal effects. Ease of serviceability is attained in that when the nozzle holder is rotated out of the cylinder head, the sleeve is simultaneously removed, without requiring additional hand operations.Type: GrantFiled: December 29, 1980Date of Patent: May 20, 1986Assignee: Robert Bosch GmbHInventors: Gerhard Stumpp, Karl Hofmann, Jurgen Treiber, Horst Wellein
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Patent number: 4515125Abstract: The invention is directed to a safety arrangement for an internal combustion engine having self-ignition where, in the sense of an overall system monitoring, specific signals relating to the operating conditions of the internal combustion engine are continuously monitored. These signals are indicative, for example, of the position of the throttle pedal, the computed rack-travel nominal or desired value, and the rotational speed. The monitored signals are processed and a corrected rack-travel nominal value is generated by means of a minimum-value selection circuit. The corrected rack-travel nominal value signal generated in this manner is fed to the rack controller of an EDC unit. At the same time, a deviation in rack travel is determined utilizing the corrected rack travel nominal value in combination with an actual-value signal of the rack travel fed back from the rack-travel sensor.Type: GrantFiled: January 17, 1984Date of Patent: May 7, 1985Assignee: Robert Bosch GmbHInventors: Rainer Buck, Hermann Kull, Fridolin Piwonka, Albrecht Sieber, Gerhard Stumpp, Wolf Wessel
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Patent number: 4509480Abstract: The invention is directed to a safety arrangement for an internal combustion engine with self-ignition such as a diesel engine or the like wherein the operational signals of throttle position, rack travel and rotational speed are continuously monitored and compared with upper and lower limit values for these signals. From this comparison, comparison signals are generated and are combined with each other to provide an overall monitoring of the operation of the diesel engine so that the latter can be shut off when impermissible ranges of operation are present or, if conditions permit, the engine can be switched to an emergency mode of operation so that the motor vehicle may be driven to the next service station for repair.Type: GrantFiled: January 17, 1984Date of Patent: April 9, 1985Assignee: Robert Bosch GmbHInventors: Hermann Kull, Wolf Wessel, Gerhard Stumpp
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Patent number: 4501252Abstract: A fuel injection pump in which the beginning of fuel injection can be adjusted to begin earlier than normal, particularly during warm-up by means of an adjusting piston. The adjustment takes place by changing the tension of the return spring which cooperates with the fuel injection adjustment piston.Type: GrantFiled: September 19, 1977Date of Patent: February 26, 1985Assignee: Robert Bosch GmbHInventors: Gerhard Stumpp, Hans-Jorg Vogtmann, Paul Fussner, Manfred Schwarz, Gerald Hofer, Karl Konrath, Max Straubel, Werner Faupel
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Patent number: 4487182Abstract: A control device for internal combustion engines, especially for turbocharged diesel engines. The control device is arranged to generate a control distance proportional to the amount of air supplied to the engine. The control device includes a pressure chamber charged by the intake air pressure, which is separated from the back-pressure chamber by a membrane. A stop abuts against the membrane and is scanned via an intermediate lever by a supply volume adjustment element of a fuel pump. The reference absolute pressure in the back-pressure chamber is positioned between a throttle with variable throttle diameter and a throttle with fixed throttle diameter. A vacuum pump aspirates air via the throttle with fixed throttle diameter, connected to atmospheric pressure, and the throttle with variable throttle diameter is arranged to respond to the reference absolute pressure.Type: GrantFiled: January 24, 1983Date of Patent: December 11, 1984Assignee: Robert Bosch GmbHInventor: Gerhard Stumpp
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Patent number: 4482093Abstract: A fuel injection nozzle for internal combustion engines, provided with a valve needle and an induction coil, which sits in a spacer plate mounted between the nozzle body and the nozzle holder. The valve needle projects into the induction coil and acts upon the magnetic domain of the induction coil by the action of its movement, whereby a signal dependent on the velocity of the needle is produced. The induction coil is provided with laterally disposed contact prongs which are connected with extended connecting wires by means of a weld or solder joint. The connecting wires lead through boreholes in the nozzle holder. The injection nozzle is distinguished by an especially small electrical line resistance, and by the fact that, with appropriate dimensioning and construction of the ends of the connecting wires, which carry the extended connection contacts, there will be no special contact measures necessary for disassembly.Type: GrantFiled: June 8, 1982Date of Patent: November 13, 1984Assignee: Robert Bosch GmbHInventors: Martin Hafner, Karl Hofmann, Josef Schlagenhauf, Gerhard Stumpp, Dietrich Trachte