Patents Examined by Mahmoud M Gimie
  • Patent number: 6158968
    Abstract: A fluid displacement apparatus includes a cam rotor connected to a drive shaft and having a first arm extending therefrom. A plate is tiltably connected to the drive shaft. The plate has a surface disposed at an adjustable inclined angle relative to a plane perpendicular to the drive shaft and has a second arm extending therefrom. The plate and the piston are coupled, so that the pistons are driven in reciprocating motion within the cylinders upon nutation of the plate. A pin member is disposed in the second arm of the plate. An engaging device is disposed in the cam rotor. The pin member is slidably disposed in the engaging device, so that the cam rotor is coupled to the slant angle for permitting the inclination of the slant plate to vary.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: December 12, 2000
    Assignee: Sanden Corporation
    Inventor: Shinji Nakamura
  • Patent number: 6158975
    Abstract: A fuel pump module constructed to be disposed exteriorly of a vehicle fuel tank carries, as a single unit, an electric motor fuel pump and a pressure control device which controls the pressure of fuel delivered to an internal combustion engine from the fuel pump. Fuel supplied from the fuel tank to the module is drawn into the fuel pump which increases the pressure of the fuel and then discharges the fuel under pressure from an outlet of the fuel pump which communicates with the pressure control device carried by the module and an outlet of the module which in turn, communicates with the engine. The pressure control device may be either a pressure relief valve, which functions to limit the maximum pressure of the fuel delivered to the engine, or a fuel pressure regulator, such as a bypass pressure regulator, which bypasses to a point upstream of the fuel pump inlet fuel delivered from the fuel pump in excess of the engine's fuel demand.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: December 12, 2000
    Assignee: Walbro Corporation
    Inventors: Shawn Dill, Peter P. Kuperus, Ronald H. Roche, Tomoko Takano
  • Patent number: 6155232
    Abstract: The elapsed time Ta(i) of 30.degree. crank angle near top dead center of compression and the elapsed time Tb(i) of 30.degree. crank angle near 90.degree. after top dead center of compression are found. The difference DTa(i) of the elapsed times Ta(i) between 720.degree. crank angle for a first cylinder and a second cylinder performing combustion after the first cylinder is found. The assumed elapsed time when assuming that there is no torque fluctuation is calculated from the difference DTa(i) of the elapsed time of the first cylinder and the elapsed time of the second cylinder is calculated and the assumed elapsed time is used to calculate the amount of torque fluctuation. It is judged if the vehicle is driving over a rough road from the amplitude and cycle of fluctuation of the vehicle speed. When it is judged that the vehicle is driving over a rough road, correction of the air-fuel ratio based on the amount of torque fluctuation is prohibited.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: December 5, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Nobuyuki Shibagaki
  • Patent number: 6155229
    Abstract: An internal combustion engine with charge stratification and directed air flow is provided. A charge motion control valve is positioned in the upper intake manifold and bifurcated intake ports are utilized in the cylinder head which direct the air flow into one intake port when desired. This provides improved engine performance, emissions, and fuel economy with easier packaging and consequently reduced cost.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: December 5, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventors: Douglas David Cantrell, Jr., Darice Marie Morris, Mark Allen Bourcier, Keith Daniel Miazgowicz, Michael Bruno Magnan, Patrick Joseph Crowley, Rebecca Frayne Speckhals, Theodore Thomas Geftos
  • Patent number: 6155240
    Abstract: A lower limit EIEOF of a current for controlling the EGR valve employed to prevent the EGR valve from generating chattering is set in accordance with an engine revolution speed NE which indirectly indicates an amount of exhaust pressure acting on the EGR valve as the current value of the lower limit EIEOF is influenced by the exhaust pressure as a back pressure of the EGR valve. Therefore, it is possible to set a current value eiefin for EGR control in a range which has not been conventionally covered. The EGR control can be applied to a wider driving region, thus achieving an improved driving state of a diesel engine.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: December 5, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoki Amano, Hideyuki Takaki
  • Patent number: 6152701
    Abstract: The present invention relates to a method for designing handling systems such as pipeline systems for fluid products such as emulsions and dispersions which deteriorate at elevated temperature and pressure. The method of the present invention comprises the steps of providing a pipeline having a fluid inlet point and a fluid discharge point and at least one pump for transporting the fluid from the fluid inlet point to the fluid discharge point, selecting one of a maximum pressure drop to be encountered by the fluid as it travels from the fluid inlet point to the fluid discharge point and a maximum volume of fluid to be handled by the system, and operating the system in accordance with the following equation: ##EQU1## where B is the maximum allowable shear rate from a first fluid inlet point to a second fluid discharge point, D is the diameter of the pipeline, and Q is the volume of fluid to be transported between the fluid inlet point and the fluid discharge point.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: November 28, 2000
    Assignee: Intevep, S.A.
    Inventors: Mariano Eurique Gurfinkel Castillo, Gustavo A Nunez, Geoff McGrath
  • Patent number: 6152103
    Abstract: A direct fuel injection ignition engine includes combustion chambers with a pent roof type ceiling. Each piston has a top surface with a configuration complementary to the combustion chamber ceiling. A fuel injector is disposed at a peripheral portion of the combustion chamber and injects fuel toward the center portion of the top surface of the piston. A cavity is formed on the top surface of the piston. The cavity has a configuration of an elongated circle with a substantially flat bottom surface. The surrounding side wall of the cavity is substantially upright in relation to the bottom surface. A cavity centerline drawn through the longitudinal axis of the cavity is perpendicular to the injection axis line and offset from the center of the piston toward the injector.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: November 28, 2000
    Assignee: Mazda Motor Corporation
    Inventors: Hidetoshi Kudo, Noriyuki Ota, Masashi Marubara, Hiroyuki Yamashita
  • Patent number: 6142121
    Abstract: In the fuel injection method and device for engines, information obtained from the differential value of the common rail pressure is used to correct the parameters of the command pulses to the flow control valve and the solenoid valve of each injector and thereby limit deviations of the fuel injection characteristic of the injector from the target injection characteristic. From the curves of the differential values R of the common rail pressure Pc, the actual fuel injection parameters for the injectors-injection start timing Tis, gross injection amount Qt, initial injection amount Qe and maximum injection rate Rmax-are obtained.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: November 7, 2000
    Assignee: Isuzu Motors Limited
    Inventors: Terukazu Nishimura, Tsutomu Fuseya, Shigehisa Takase
  • Patent number: 6142740
    Abstract: A compression system includes a sequencing switch movable between a first switch position and a second switch position for alternating a first compressor and a second compressor between a lead mode and a lag mode so that one of the compressors is always in the lead mode and one of the compressors is always in the lag mode. The compression system includes a first compressor including a first microcontroller having a data entry device for establishing a lead mode pressure range and a lag mode pressure range. The first compressor includes a first pressure gauge for sensing the pressure level of compressed fluid discharged therefrom and for relaying the sensed pressure level to the first microcontroller. The first microcontroller continuously monitors the pressure level of the compressed fluid discharged from the first compressor and compares the pressure level of the compressed fluid to the lead mode pressure range and the lag mode pressure range.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: November 7, 2000
    Assignee: Ingersoll-Rand Company
    Inventor: Marty L. Connell
  • Patent number: 6135089
    Abstract: The elapsed time Ta(i) of 30.degree. crank angle near top dead center of compression and the elapsed time Tb(i) of 30.degree. crank angle near 90.degree. after top dead center of compression are found. The difference DTa(i) of the elapsed times Ta(i) between 720.degree. crank angle for a first cylinder and a second cylinder performing combustion after the first cylinder is found. The assumed elapsed time when assuming that there is no torque fluctuation is calculated from the difference DTa(i) of the elapsed time of the first cylinder and the elapsed time of the second cylinder is calculated and the assumed elapsed time is used to calculate the amount of torque fluctuation. It is judged if the vehicle is driving over a rough road from the amplitude and cycle of fluctuation of the vehicle speed. When it is judged that the vehicle is driving over a rough road, correction of the air-fuel ratio based on the amount of torque fluctuation is prohibited.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: October 24, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Nobuyuki Shibagaki
  • Patent number: 6135734
    Abstract: The high-pressure fuel pump unit for an in-cylinder injecting type engine of the invention comprises high-pressure fuel pump 3 which has a casing 40 having a sucking path and a discharge path, a cylinder 41 provided in the casing 40 and having a sliding hole 41a, a fuel pressurizing chamber 45 formed on a part of the sliding hole 41a, and a plunger 43 arranged reciprocally movably in the sliding hole 41a, sucks the fuel from the sucking path into the fuel pressurizing chamber 45 through reciprocation of the plunger 43, and discharges the pressurized fuel from the discharge path, and pressure-feeds the same to a fuel injector 1 of an in-cylinder injecting type engine; a damper 30 which is provided integrally with the high-pressure fuel pump 3 and absorbs pulsation of the fuel pressure caused by the high-pressure fuel pump 3 in the low-pressure fuel path; and an accumulator 70 which is provided integrally with the high-pressure fuel pump 3 and absorbs pulsation of pressure of the fuel discharged by the high-pre
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: October 24, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shuzo Isozumi, Wakaki Miyaji
  • Patent number: 6135730
    Abstract: The provision of an electric fuel pump in which the rotational frictional resistance between the pump casing and the impeller is made small to prevent the decrease of the motor rotational number and the increase of the current consumption and in which the discharge efficiency is improved. In a pump casing 17 supporting the impeller 1 by the sliding surface 3a of the pump base 3 and the sliding surface 16a of the pump cover 16 and at the inner circumference side of the pump chamber 4 in the vicinity of the side 6a opposing to the pump chamber outlet 6 of the sliding surface 16a of the pump cover 16, the provision is made of an abutment relief portion 16b having a gap larger than said small gap, and a stepped side wall 16c defined at an end portion 19 downstream of the side of said abutment relief portion 16b opposing to said pump chamber outlet 6.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: October 24, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroshi Yoshioka
  • Patent number: 6132179
    Abstract: A compressor has a compressor housing (10) which includes therein a fixed scroll (25) having a fixed plate member (51) and a fixed spiral member (52) provided on the fixed plate member, and a movable scroll (26) having a movable plate member (61) and a movable spiral member (62) provided on the movable plate member. The fixed plate member is provided with a plurality of bypass holes (51a, 51b) for allowing gas introduced into fluid pockets defined between the fixed and movable spiral members to escape at different positions. The fixed plate member is further provided with a plurality of valve mechanisms each corresponding to one of the plurality of bypass holes for opening or closing the corresponding bypass hole. Operating pressures of the valve mechanisms are set different from each other.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: October 17, 2000
    Assignee: Sanden Corporation
    Inventor: Akiyoshi Higashiyama
  • Patent number: 6132182
    Abstract: A blower unit which, in one embodiment, includes an elongate main mounting member, a stator, a fan subassembly, and a blower housing, is described. In the one embodiment, the elongate main mounting member is the main structural member of the unit. The stator includes a stator core and stator windings, and the stator is secured to the main mounting member. The fan subassembly includes a rotor and a plurality of vanes. The rotor includes a substantially cylindrical iron ring and a magnetic portion having a substantially cylindrical shape. The magnetic portion is secured within the inner diameter of the iron ring and defines a rotor bore. The stator is located in the rotor bore and is concentric with respect to the rotor. The rotor is coupled to the plurality of vanes so that the vanes rotate with the rotor. The fan subassembly also includes bearing assemblies which are spring biased toward, and into rotatable engagement with, the elongate main mounting member.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: October 17, 2000
    Assignee: General Electric Company
    Inventors: Khan Mohamed Khirullah Genghis Khan, Roger Neal Johnson, Thomas Merlin Jahns, Vijay Kumar Stokes, John Leo August, Jr., Harold Lown
  • Patent number: 6132183
    Abstract: Vertical support and vibration isolation of a compressor casing is provided in single large vibration isolator. Additionally side torsion isolators are axially and radially spaced from the large vibration isolator and are circumferentially spaced from each other. The compressor may be located in a shell supporting the side vibration isolators.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: October 17, 2000
    Assignee: Carrier Corporation
    Inventors: Wenlong Li, Philip L. Lavrich, Kevin B. Dunshee
  • Patent number: 6132188
    Abstract: The invention relates to a metering pump comprising a pump chamber (2) having a longitudinal axis (3) and presenting an admission orifice (4) and a delivery orifice (5), a piston (6; 30) pierced by a pump orifice (7), a drive rod (8) for driving the piston (6; 30), a non-return valve (17) mounted to move relative to the piston (6; 30), and a sleeve (9) of non-magnetic material mounted stationary inside the pump body (1) parallel to the longitudinal axis (3) of the pump chamber (2) and possessing a closed end (10) situated inside the pump body (1), and an open end (11) opening out to the outside of the pump body (1), the drive rod (8) being fitted with a magnetic element (12) co-operating, through the sleeve, with a magnetic cage (13) surrounding the sleeve (9) and coupled to the piston (6; 30).
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: October 17, 2000
    Assignee: Serac Group
    Inventor: Jacky Brunee
  • Patent number: 6129520
    Abstract: A mobile pumping station includes a mobile base frame designed to be moved across the ground and a slurry vessel mounted on the mobile base frame and connected to a liquid supply. A primary feed hopper also mounted on the mobile base frame receives a mineral and transfers the mineral to the slurry vessel. The primary feed hopper can be adjusted to achieve a predetermined flow of the mineral to the slurry vessel so that the ratio of the mineral to the liquid can be controlled. The mobile pumping station can be moved into a position adjacent a mineral deposit such that a portion of the mineral deposit can be loaded into the slurry vessel. The mineral is formed into a flowable slurry by combining liquid from the liquid supply with the mineral, and thereafter the flowable slurry is discharged from the vessel via a slurry pump.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: October 10, 2000
    Assignee: Hydraplant Equipment Pty Ltd
    Inventor: Peter Cooper
  • Patent number: 6126416
    Abstract: An adjustable shroud arrangement is disclosed for a submergible pumping system. The pumping system is of the type used to raise fluids from wells, such as petroleum production wells. The systems include a plurality of interconnected components, including a motor and a pump driven by the motor. The systems may also include a separator for separating production fluids from non-production fluids. The shroud serves to transfer fluids between system components, such as around the motor to promote convective cooling of the motor during operation. The shroud fits around a portion of the pumping unit to define a fluid flow path. The shroud is adjustable with respect to the pumping unit to permit relative thermal expansion and contraction of the shroud and the pumping unit components. In a preferred embodiment, the shroud has one end fixed to the pumping unit and a second end slidingly seals against a component of the pumping unit.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: October 3, 2000
    Assignee: Camco International, Inc.
    Inventor: Lawrence Lee
  • Patent number: 6123509
    Abstract: A pressure valve used in a cleaning apparatus. The pressure valve is provided between a pump motor and a cleaning injector. The pressure valve includes a valve body, a floating valve rod, a ball valve, a compression spring, and an adjusting screw. The valve body is connected to the water supply system via pipings (A, B, C) so that starting and shutting off of the cleaning injector can alter the water pressures in the individual chambers of the valve body, which then causes the opening and closing of the ball valve. Due to the changes in the water pressure within the chambers of the pressure valve, a floating valve rod within the pressure valve will press against a micro switch to control the starting or shutting off of the pumping motor.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: September 26, 2000
    Inventor: Fred L. Hung
  • Patent number: 6119669
    Abstract: An engine ignition control system includes a device adapted to receive the ignition timing signal which is generated by the engine original ignition pulse generator. The device derives a pulse sequence synchronous with the rotation of the engine from the original ignition timing signal. The device then generates a precision ignition signal from the synchronous sequence pulse at the optimum ignition angle. The precision ignition signal is supplied back to the original ignition system of the engine for the generation of the ignition sparks. The synchronous pulse sequence represents the angular position of the rotation of the engine in higher accuracy then the original ignition timing signal. In preferred embodiments, the synchronous pulse sequence represents the angular position of the engine up to 1 degree making high accuracy ignition advance control for most old engines that can produce only the ignition timing signal from its original ignition pulse generator possible.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: September 19, 2000
    Assignee: Cosmo Solution Limited
    Inventor: Siu Ming Yung