Patents by Inventor Murray F. Busato

Murray F. Busato 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).

  • Patent number: 6223733
    Abstract: An internal combustion engine intake manifold has a wall separating internal manifold space from an external space. An EGR valve for recirculating engine exhaust gases mounts on the wall such that an EGR outlet port of the EGR valve is communicated to the internal manifold space. EGR valves having various mounts for closing valve mounting holes in the manifold wall are disclosed.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: May 1, 2001
    Assignee: Siemens Canada Limited
    Inventors: Murray F. Busato, Scott E. W. Hussey, John E. Cook
  • Patent number: 6196202
    Abstract: An evaporative emission control system for a fuel system of an internal combustion engine of an automotive vehicle has a purge flow path through which an evaporative emission containment space of the fuel system for containing volatile fuel vapors is purged to an intake system of the engine. A purge valve controls purge flow through the purge flow path. When the intensity of intake system vacuum falls below a threshold, an electric-motor-driven blower operates to creates a pressure rise in the purge flow path upstream of the purge valve and downstream of the containment space. A differential pressure sensor senses pressure differential across the purge valve, and the purge valve includes an integral valve position sensor, both sensors providing feedback signals to a controller than controls operation of both the purge valve and the blower.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: March 6, 2001
    Assignee: Siemens Canada Limited
    Inventors: Murray F. Busato, John Edward Cook
  • Patent number: 6189520
    Abstract: An EGR module has a valve containing a main flow passage having a valve member that controls exhaust gas flow through the passage. An internal pressure sensing passage communicates pressure at one side of an orifice in the main flow passage to a pressure sensor. The pressure sensor and an EVR valve are integrated with the body of a fluid pressure actuator that operates the valve member. Various embodiments are disclosed.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: February 20, 2001
    Assignee: Siemens Canada Limited
    Inventors: John E. Cook, Murray F. Busato
  • Patent number: 6170476
    Abstract: An electric EGR module has a main flow passage containing a valve member operated by a movable actuator wall of a fluid pressure actuator to control exhaust gas flow through the passage. The movable actuator wall bounds a portion of a variable volume chamber space to which regulated vacuum from an electric vacuum regulator (EVR) valve is communicated to position the movable actuator wall, and hence the valve member. An internal pressure sensing passage, which includes a tube that also functions as a shaft for coupling motion of the actuator wall to the valve member, communicates pressure at one side of an orifice in the main flow passage to a pressure sensor. The tube communicates with a variable volume chamber space that forms a portion of the sensing passage and that varies in volume with the positioning of the tube by the actuator wall. The pressure sensor and the EVR valve are integrated with the body of the fluid pressure actuator.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: January 9, 2001
    Assignee: Siemens Canada Ltd.
    Inventors: John E. Cook, Murray F. Busato
  • Patent number: 6152115
    Abstract: An internal combustion engine intake manifold has a wall separating internal manifold space from an external space. A purge valve for purging fuel vapors from an evaporative emission space of a fuel storage system for the engine mounts on the wall external to the internal manifold space and places a purge outlet port of the purge valve in communication with the internal manifold space. An EGR valve for recirculating engine exhaust gases mounts on the wall such that an EGR outlet port of the EGR valve is communicated to the internal manifold space.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: November 28, 2000
    Assignee: Siemens Canada Limited
    Inventors: Murray F. Busato, David W. Balsdon, John E. Cook
  • Patent number: 6138652
    Abstract: An EGR module has an emission control valve body containing a main flow passage having a valve member that controls exhaust gas flow through the passage. An internal pressure sensing passage communicates pressure at one side of an orifice in the main flow passage to a pressure sensor. The pressure sensor and an EVR valve are integrated with the body of a fluid pressure actuator that operates the valve member. The actuator has two body parts, one of which is assembled to the emission control valve body before the two actuator body parts are assembled together. The sensor has an electric connector containing some terminals connected to one or more electric sensing elements and additional terminals that make mated connection with terminals of the EVR valve as the sensor is being associated with the EVR valve during assembly of the module.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: October 31, 2000
    Assignee: Siemens Canada Limited
    Inventors: John E. Cook, Murray F. Busato
  • Patent number: 6116224
    Abstract: In an automotive vehicle powered by an internal combustion engine, an EGR flow path includes an exhaust emission control valve between an exhaust system of the engine and an intake system of the engine. The valve is operated by an actuator having a body mounted on the emission control valve body and a shaft for operating the valve to selectively restrict the flow path. The shaft is operated by a movable actuator wall of the actuator bounding a portion of a variable volume chamber space to which regulated vacuum from an electric vacuum regulator (EVR) valve is communicated to position the movable actuator wall. An internal pressure sensing passage, which includes a tube that also functions as the shaft communicates pressure at a location in the flow path to a pressure sensor. The tube communicates the flow path to a chamber space separated from the variable volume chamber space by a separator wall, and a port of the pressure sensor communicates with the chamber space of the sensing passage.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: September 12, 2000
    Assignee: Siemens Canada Ltd.
    Inventors: John E. Cook, Murray F. Busato
  • Patent number: 6102364
    Abstract: A control for controlling an output of a system of an automotive vehicle having an electric-operated control device that controls an output of a system of the automotive vehicle in accordance with an electric control signal comprising a waveform comprising voltage pulses applied to the device. An electric control, including a processor, for developing the electric control signal from a primary control signal and a secondary control signal. The processor causes the secondary control signal to selectively interact with the primary control signal in developing the electric control signal such that at certain times, the electric control signal is developed from the primary control signal alone, and at certain other times, the electric control signal is developed by interaction of the secondary control signal with the primary control signal.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: August 15, 2000
    Assignee: Siemens Canada Limited
    Inventor: Murray F. Busato
  • Patent number: 6073617
    Abstract: An internal combustion engine intake manifold has a wall separating internal manifold space from an external space. An EGR valve for recirculating engine exhaust gases mounts on the wall such that an EGR outlet port of the EGR valve is communicated to the internal manifold space. Various embodiments of mounts for closing valve mounting holes in the manifold wall are disclosed.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: June 13, 2000
    Assignee: Siemens Canada Ltd.
    Inventors: Murray F. Busato, David W. Balsdon, John E. Cook
  • Patent number: 6058913
    Abstract: An emission control valve assembly has an internal main flow passage through a valve body between a first port and a second port, an electric actuator, and a valve operated by an armature of the actuator to selectively open and close the passage. A force-balancing mechanism applies to the valve a force that opposes force created by pressure differential between the first and second ports. An annular filter cartridge is disposed within the valve body to trap particulate material in flow entering through the first port so that the trapped material does not reach the valve and its seat.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: May 9, 2000
    Assignee: Siemens Canada Limited
    Inventors: Murray F. Busato, John Edward Cook
  • Patent number: 6000677
    Abstract: A valve assembly (14) has an internal main flow passage through a valve body (24) between a first port (25) and a second port (26), an electric actuator (30), and a valve (86) operated by an armature (58) of the actuator to selectively open and close the passage. A force-balancing mechanism (92) applies to the valve (86) a force that opposes force created by pressure differential between the first and second ports. This mechanism includes an internal chamber (126) bounded in part by a fluid-impermeable movable wall (94) that extends between and is sealed to both the body (24) and the valve (86), and a communication passage (110, 112) that communicates one of the ports (26) to the chamber space when the valve is closing the passage. The valve (86) has a head part (88) and a seal part (90) joined together. The seal part seals the head part to the valve seat (29) when the valve is closing the passage. A retainer part (116) holds the inner margin of the movable wall sealed on the head part.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: December 14, 1999
    Assignee: Siemens Canada Limited
    Inventors: John E. Cook, Murray F. Busato, David W. Balsdon, Gerry Bruneel, Rick Van Wetten, Robert Faulkner, Derek Hime
  • Patent number: 5996559
    Abstract: An internal combustion engine intake manifold has a wall separating internal manifold space from an external space. The body of a purge valve for purging fuel vapors from an evaporative emission space of a fuel storage system for an engine is disposed in the external space mounted on the wall such that a portion of the purge valve body that contains an outlet port confronts the wall, and the portion of the wall confronted by that portion of the purge valve body contains an opening through which the outlet port communicates with the internal manifold space. The outlet port may be a nipple which passes through the opening in the manifold wall to communicate the outlet port with the internal manifold space.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: December 7, 1999
    Assignee: Siemens Canada Limited
    Inventors: Murray F. Busato, David W. Balsdon, John E. Cook
  • Patent number: 5967487
    Abstract: A valve assembly (14) has an internal main flow passage through a valve body (24) between a first port (25) and a second port (26), an electric actuator (30), and a valve (86) operated by an armature (58) of the actuator to selectively open and close the passage. A force-balancing mechanism (92) applies to the valve (86) a force that opposes force created by pressure differential between the first and second ports. The valve has cushion media (76, 80, 142) that cushions impact of lateral displacements of the armature and cushion media (76) for cushioning axial impact between the armature and stator. An overmold (32) encloses internal parts, and one of the ports contains sonic nozzle structure (28). the valve exhibits improved noise attenuation, durability, and performance.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: October 19, 1999
    Assignee: Siemens Canada Ltd.
    Inventors: John E. Cook, Murray F. Busato, David W. Balsdon, Gerry Bruneel, Rick Van Wetten, Robert Faulkner, Derek Hime
  • Patent number: 5957115
    Abstract: A system and method for an engine-powered automotive vehicle evaporative emission control system having an evaporative emission space for containing volatile fuel vapors, and a leak detection system for detecting leakage from the evaporative emission space. At the beginning of a test, an initial test pressure that differs sufficiently from atmospheric pressure to allow a leak to be detected is created in the evaporative emission space. After attainment of the initial test pressure in the evaporative emission space, the initial test pressure is restored whenever the pressure changes by a predetermined amount due to a leak. The test includes measuring at least one of: a time interval required for pressure in the evaporative emission space to change from the initial test pressure by the predetermined amount; and b) a time interval required to restore the initial test pressure in the evaporative emission space.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: September 28, 1999
    Assignee: Siemens Canada Limited
    Inventors: Murray F. Busato, John E. Cook, Paul D. Perry
  • Patent number: 5950576
    Abstract: A rotary proportioning valve has a valve body with two inlet ports and an outlet port spaced apart about an axis. The valve body has a circular side wall and a first circular end wall closing one axial end of the side wall. Each of the ports intercepts at least the first end wall to communicate with interior space of the valve body. A shutter disposed within the interior space is supported for rotary positioning about the axis, and is operated by a shaft that extends through a second end wall that closes the opposite end of the body side wall. The shutter has a circular wall that confronts at least the first end wall. Plural fenestrations in the circular shutter wall are positioned relative to respective body ports in accordance with positioning of the shutter for proportioning flows into the inlet ports into a proportioned flow from the outlet port.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: September 14, 1999
    Assignee: Siemens Canada Limited
    Inventors: Murray F. Busato, John Edward Cook
  • Patent number: 5924675
    Abstract: An automotive emission control valve including a body having an internal main flow passage between a first port and a second port, a valve seat circumscribing a transverse cross-sectional area of the passage, a valve member with a stem and a head that seats on and unseats from the valve seat, an actuator that operates the valve member. The actuator provides a magnetic circuit path that includes respective pole pieces at respective opposite axial ends of the actuator. At least one of the pole pieces being a two-part pole piece including a central hub part joined to an outer rim part that is disposed circumferentially about the central hub part.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: July 20, 1999
    Assignee: Siemens Canada Limited
    Inventors: Scott E. W. Hussey, Allan Tamman, Murray F. Busato
  • Patent number: 5909725
    Abstract: An emission control valve is retained in a mounting on an engine intake manifold by a retaining clip. The clip is formed from a single piece of metal strip stock to have tines that pass through slots in the mounting to axially capture the valve in the mounting. The clip also has a locking formation releasably locking the clip with a catch formation of the mounting.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: June 8, 1999
    Assignee: Siemens Canada Limited
    Inventors: David W. Balsdon, Murray F. Busato
  • Patent number: 5901688
    Abstract: An emission control valve is retained in a mounting on an engine intake manifold by a retaining clip. The clip is formed from a single piece of metal strip stock to have tines that pass through slots in the mounting to axially capture the valve in the mounting. The clip also has a locking formation releasably locking the clip with a catch formation of the mounting.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: May 11, 1999
    Assignee: Siemens Canada Limited
    Inventors: David W. Balsdon, Murray F. Busato
  • Patent number: 5727532
    Abstract: The purge valve embodies a solenoid that has a linear force vs. current characteristic acting on the armature. Effects of hysteresis are minimized by certain constructional features and the manner of operating the valve by an associated control circuit.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: March 17, 1998
    Assignee: Siemens Electric Limited
    Inventors: Gary Everingham, John E. Cook, Paul D. Perry, Murray F. Busato
  • Patent number: 5551406
    Abstract: The purge valve embodies a solenoid that has a linear force vs. current characteristic acting on the armature. Effects of hysteresis are minimized by certain constructional features and the manner of operating the valve. Several embodiments are disclosed.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: September 3, 1996
    Assignee: Siemens Electric Limited
    Inventors: Gary Everingham, John E. Cook, Paul D. Perry, Murray F. Busato