Patrick Mattes 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).
Abstract: A valve for controlling fluids having an actuator unit for actuating a valve member, which has a first piston and a second piston, separated from it by a hydraulic chamber, and which actuates a valve closing member that divides a low-pressure region at system pressure from a high-pressure region. For leakage compensation, a filling device connectable to the high-pressure region is provided with a hollow chamber, in which a throttle body is disposed such that a line leading to the high-pressure region discharges into the hollow chamber on one end of the throttle body, and on the other end a system pressure line leading to the hydraulic chamber branches off. The system pressure is built up by geometric definition of a throttle bore in the throttle body and of the dimensions of the piston, along which the system pressure is reduced, as a function of a prevailing pressure in the high-pressure region.
Abstract: The fuel injection device has a high-pressure pump that supplies highly pressurized fuel to at least one high-pressure reservoir connected to injectors disposed in cylinders of an engine, wherein the injectors are connected to a common low-pressure reservoir. A pressure holding valve maintains a predetermined low pressure in the low-pressure reservoir. A pressure regulating valve regulates the pressure in the high-pressure reservoir by diverting fuel from the at least one high-pressure reservoir through a diversion connection into a low-pressure region. The diversion connection of the pressure regulating valve is connected to the low-pressure reservoir so that the low-pressure reservoir is filled with fuel.
Abstract: A fuel injection system having a high-pressure source and an injection valve having a pressure chamber communicating with the high-pressure source, and a valve member controlling at least one injection opening when acted upon by the pressure in the pressure chamber in an opening direction counter to a closing force. A control piston movable with the valve member in the closing direction defines a control pressure chamber which communicates with the high-pressure source and which has a communication controlled by an electrically actuated valve, with a relief chamber. The control valve is opened for fuel injection, so that the control pressure chamber communicates with the relief chamber. The valve member and the control piston move in the opening direction when the control valve is opened, and a limitation in the opening motion of the injection valve member and of the control piston is effected only by a pressure increase in the control pressure chamber from closure of the control valve.
Abstract: An injection nozzle has a nozzle body (12), a nozzle needle (18) that is supported displaceably in the nozzle body, a control chamber (20) that communicates with a fluid inlet (30) and a fluid outlet (34), and a valve element (40) that can open and close the fluid outlet (34). The control chamber is laterally defined by a displaceable ring (24); the ring rests on the nozzle needle, and a closing spring (28) presses the ring against the nozzle needle in fluid-tight fashion.
April 7, 2003
September 11, 2003
Dieter Kienzler, Patrick Mattes, Wolfgang Stoecklein, Friedrich Boecking
Abstract: An injection valve is proposed, including at least a nozzle module (2), which has a valve control piston (4), cooperating with a nozzle needle, and a valve control chamber (5) defined by a spring plate (21) and a face end (6) of the valve control piston (4), which valve control chamber communicates with a high-pressure supply line (9) via an inlet conduit (7) and is operatively connected, via an outlet conduit (24), with a valve control module (3) that is actuated by means of a piezoelectric actuator unit and is embodied in valvelike fashion and has at least one valve closing member (14), disposed in a valve chamber (18) and cooperating with at least one valve seat (16, 17); the nozzle needle is opened via a pressure reduction in the valve control chamber (5), effected by means of the valve control module (3) via the outlet conduit (24), and is closed via a filling of the valve control chamber (5).
Abstract: The invention proposes an injection apparatus (1) for fuel, with a system pressure region (14) in which a system pressure prevails and an injection pressure region (11) in which an injection pressure prevails, wherein the injection pressure is greater than the system pressure. The injection pressure region (11) and the system pressure region (14) communicate with each other by means of a throttle device (12, 13). The system pressure in the system pressure region (14) can be controlled by means of a system pressure valve (16). The invention also proposes a method for producing a system pressure in an injection apparatus for fuel.
December 6, 2002
July 17, 2003
Dieter Kienzler, Patrick Mattes, Friedrich Boecking
Abstract: The invention relates to an injection system having a piezoelectric adjuster (10), a hydraulic booster (12) and a control valve (14). In continuous operation of the injection system, the stroke of the piezoelectric adjuster (10) can be transmitted to the control valve (14) via a hydraulic medium in the hydraulic booster (12). In addition, the piezoelectric adjuster (10) and the components of the hydraulic booster (12) are disposed relative to the control valve (14) such that at least a portion of the stroke of the piezoelectric adjuster (10) can be transmitted directly to the control valve (14). In the method according to the invention for operating a piezoelectric injector, in which the piezoelectric adjuster (10) is electrically excited and made to execute a stroke; in a first phase, the stroke is transmitted directly to a control valve (14); in a second phase, the stroke is transmitted hydraulically to a control valve (14); and the control valve (14) is opened by the stroke.
Abstract: The invention relates to a fuel injector which includes a hydraulic booster which can be made to communicate on the high-pressure side with an inlet from a high-pressure source. Between a high-pressure side and a system pressure side, there is a throttle restriction. A throttle element that can be acted upon by pressure from the high-pressure side and that is associated with an outflow opening is received movably in a hollow chamber of the injector body and closes a sealing gap that lengthens a sealing length.
Abstract: A valve for controlling fluids [is proposed,] having an actuator unit [(4)] for actuating a valve member [(3)], which has a first piston [(9)] and a second piston [(11)], separated from it by a hydraulic chamber [(13)], and which actuates a valve closing member [(12)] that divides a low-pressure region [(16)] at system pressure from a high-pressure region [(17)]. For leakage compensation, a filling device [(27)] connectable to the high-pressure region [(17)] is provided with a hollow chamber [(25)], in which a throttle body [(26)] is disposed such that a line [(33)] leading to the high-pressure region [(17)] discharges into the hollow chamber [(25)] on one end of the throttle body [(26)], and on the other end a system pressure line [(28)] leading to the hydraulic chamber [(13)] branches off.
Abstract: A valve for controlling fluids is proposed, including at least one actuator unit (4) for actuating a valve member (3) which is axially displaceable in a bore (10) of a valve body (7) and which has at least one valve closing member (12), disposed in a valve chamber (18) and cooperating with at least a first valve seat (14), as well as a first piston (9) and a second piston (11). Between the pistons (9, 11), a hydraulic chamber (13) functioning as a hydraulic booster is disposed, which to compensate for leakage losses has a filling device, which comprises a pressure compensation conduit (24) that essentially transmits the pressure prevailing in the valve chamber (18) to the hydraulic chamber (13), making for a quasi-force-balanced valve (Drawing).
Abstract: A valve for regulating fluids includes a piezo-electric actor unit (9) for operating a valve member assembly. The valve member assembly has at least one first piston (13) guided in a valve body (10) and a second piston (14). A hydraulic chamber, acting as a hydraulic converter, is disposed between the first and second pistons (13, 14). The second piston operates a valve-closing member (15) disposed on an end facing away from the hydraulic chamber (16). The valve closing member (15) cooperates with at least one valve seat (17) formed on the valve body (10) and in a closed position, separates a system pressure region (18) of the valve (1) from a high pressure region (5). The second piston (14) is surrounded by and supported by an approximately casing-type spacer (22) on the valve body (10).
August 12, 2002
February 20, 2003
Patrick Mattes, Wolfgang Stoecklein, Dietmar Schmieder
Abstract: The invention describes a method and an apparatus for charging a piezoelectric element of a fuel injection system for, for example, an internal combustion engine. The apparatus is characterized in that the piezoelectric element is activated by an activation voltage having a value set as a function of measured fuel pressure in the fuel injection system.
April 2, 2001
Date of Patent:
January 21, 2003
Robert Bosch GmbH
Johannes-Jörg Rueger, Patrick Mattes, Alexander Hock
Abstract: The invention relates to a common rail for a common rail fuel injection system of an internal combustion engine, having a base body whose interior communicates with a plurality of connections. To increase the high-pressure strength, the interior is formed by at least two substantially circular-cylindrical recesses whose longitudinal axes are disposed parallel to one another and which communicate with one another, and the connections discharge into the interior of the base body, in the communicating region of the two substantially circular-cylindrical recesses.
Abstract: A valve for controlling fluids is embodied with a piezoelectric actuator (3) for actuating a valve member (2) that on one end has a valve head (7), forming a valve closing member, that cooperates with a seat (8) provided on the valve body (6) for opening and closing the valve (1). On a side of the piezoelectric actuator (3) remote from the valve member (2), a hydraulic chamber (21) is provided, which communicates, via at least one hydraulic line (23), with a bore (5) of the valve member (2) that is sealed from the piezoelectric actuator (3), and into which bore a piston (20) connected to the piezoelectric actuator (3) can plunge; the hydraulic chamber (21) is embodied as a hydraulic spring, which with its spring force on the piston (20) connected to the piezoelectric actuator (3) act as the prestressing element and the tolerance compensating element. The valve is intended in particular as a component of a fuel injection valve.
Abstract: A common rail injector, having a nozzle body that is secured with the aid of a lock nut to a retaining body having a fuel inlet, which communicates with a central high-pressure fuel reservoir outside the injector and with a pressure chamber inside the injector. From the pressure chamber, as a function of the position of a control valve, fuel subjected to high pressure is injected. The control valve assures that a nozzle needle, which can reciprocate in a longitudinal bore of the injector axially counter to the prestressing force of a nozzle spring that is received in a nozzle spring chamber, lifts from a seat when the pressure in the pressure chamber is greater than the pressure in a control chamber that communicates with the fuel inlet via an inlet throttle. To make higher nozzle needle speeds possible, the control chamber is integrated with the nozzle body.
Abstract: In a hydraulic stroke step-up system, in particular for an injection nozzle of a fuel injection system, having a base body (10), an inlet piston (24), a coupling chamber (38) which is filled with a hydraulic fluid, and an outlet piston (14), reliable ventilation of the coupling chamber on the one hand and a loss-free conversion of a motion of the inlet piston into a motion of the outlet piston on the other are to be assured. To this end, an intermediate piston (20) is provided, which is displaceable between a position of repose, in which the coupling chamber is closed from the outside by a ventilation opening (40), and a working position in which the ventilation opening and thus the coupling chamber are closed.
Abstract: The invention relates to a valve for controlling fluids, having an actuator unit (4) for actuating a valve member (3) which has a first piston (9) and a second piston (11), separated from it by a hydraulic chamber (13), and which actuates a valve closing member (12) that divides a low-pressure region (16) at system pressure from a high-pressure region (17). For leakage compensation, a filling device (27) connectable to the high-pressure region (17) is provided with a hollow chamber (25), in which a throttle body (26) is disposed such that a line (33) leading to the high-pressure region (17) discharges into the hollow chamber (25) on one end of the throttle body (26), and on the other end a system pressure line (28) leading to the hydraulic booster branches off.
Abstract: The invention relates to a magnet injector for fuel reservoir injection systems, having a fuel inlet and a fuel outlet, a control chamber, which communicates with the inlet, a nozzle which communicates with the inlet and a nozzle needle, which has a tip for closing the nozzle opening and has a shaft end that borders on the control chamber; and a magnet valve which has a first electromagnet, an armature, a valve chamber that communicates with the outlet via a first passage and with the control chamber via a second passage, and a throttle body which is located in the valve chamber and is connected to the armature, wherein the throttle body, in the state of repose of the injector, is kept in a first terminal position, in which it blocks one of the two passages, and is moved toward a second terminal position, in which it opens this passage, by triggering of the first magnet.
Abstract: A fuel injection valve, including a valve member which can control the opening and closing of a fuel outlet opening, an actuating mechanism which can move the valve member, and a compensation device which can exert compensation forces on the valve member that counteract an opening stroke of the valve member, wherein the compensation device has a piston which is supported so that it can move in an associated cylinder, wherein at one end, the piston defines a hydraulic chamber in the cylinder, which is acted on with a reference pressure, and in a starting position, the piston is supported at the other end against a stop that is stationary in relation to the cylinder, and via a force transmission mechanism, the valve member can drive the piston out of its starting position away from the stop. In this manner valve operation should be improved with regard to its controllability.
Abstract: A control valve for a fuel injection valve, having a valve needle, which is displaceable in a control chamber that is provided with an inlet, an outlet, a valve needle seat, and a throttle seat. Various switching states that make different courses of the opening procedure of the nozzle needle, switched by the control valve, of the fuel injection valve possible. To that end, it is provided that a throttle ring is disposed on the valve needle and is provided with throttle bores, which extend parallel to the longitudinal axis of the valve needle, and that the dimensions of the throttle ring and valve needle are selected such that an outlet conduit is formed between the outer wall of the valve needle and the inner wall of the throttle ring.