Abstract: A vehicle sensor assembly includes a plurality of engagement members which lock into a sensor receipt member attached to a vehicle gas directing component. Each of the engagement members include a first segment which is receivable within a corresponding slot and an enlarged segment which is preferably sized greater than the slot. To install the sensor assembly, the sensor assembly is pressed into the sensor receipt member until the enlarged segment of each engagement member encounters an associated extension. By providing additional force on the sensor assembly the engagement members are spread outward from their normal position to pass by the extensions such that the first segment snaps into the slots and the enlarged segments lock the sensor assembly into the installed position. Although no tools and only a minimum of force is required to install the sensor assembly, a much greater force is required to remove it.

Abstract: A method of leak detection in a closed vapor handling system of an automotive vehicle, wherein an engine is shut off, implemented by a system, the method including obtaining a start temperature and start pressure, providing an evaluation temperature, calculating a temperature differential between the start temperature and the evaluation temperature, incrementing a time counter if the temperature differential is greater than a temperature control value, computing a pressure differential between the start pressure and an evaluation pressure, and comparing the time counter to a time control value if the pressure differential is not greater than a pressure control value.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: A resonator provided for air system that includes a body defining a passageway. A wall is disposed within the chamber and the wall and the chamber are movable relative to one another to define a length and a volume of the cavity. The length and the volume of the cavity define a noise attenuating frequency. By moving the wall and chamber relative to one another the noise attenuating frequency may be changed as the frequency changes during the engine operation. The drive mechanism moves the wall in the chamber relative to one another to change the noise attenuating frequency. The chamber may be a branched type resonator or an inline type resonator. Accordingly, the above described invention provides a resonator that may be adjusted during engine operation to attenuate noise over a variety frequencies.

Abstract: A method and apparatus is provided for snap-fit attachment of a throttle shaft to a throttle body. A pair of resilient cantilevered tangs is formed on a distal end of the throttle shaft. Bearings are installed within a bore formed in the throttle body to rotatably support the shaft. The shaft is inserted through an opening in the bearings to compress the tangs and the tangs are resiliently returned to an extended position to prevent withdrawal of the shaft from the throttle body.

Abstract: A method of leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing a vacuum detection component having a microcontroller operatively coupled to actuators and sensors, receiving at least one sensor signal from the sensors to the vacuum detection component, processing the at least one sensor signal in the microcontroller, sending output to an engine management system based on the at least one processed sensor signal, processing the output in the engine management system operatively coupled to a control valve, transmitting input from the engine management system to the vacuum detection component based on the processed output, and sending actuator signals from the microcontroller to the actuators.

Abstract: A sensor arrangement for an integrated pressure management apparatus. The sensor arrangement includes a chamber having an interior volume that varies in response to fluid pressure in the chamber. The chamber includes a diaphragm displaceable between a first configuration corresponding to fluid pressure above a certain pressure level and to a second configuration corresponding to fluid pressure below the certain pressure level. A resilient element biases the diaphragm toward the first configuration and a switch is actuated by the diaphragm in the second configuration.

Abstract: A connection provides a fluid tight communication between a valve and a tube. The valve includes a first surface, a second surface, and an aperture extending through the valve between the first and second surfaces. The tube includes an end portion terminating at an edge. The end portion penetrates the first surface, extends through the aperture, and is deformed so as to engage the second surface.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An exhaust gas recirculation (EGR) system module is provided that integrally includes an electric vacuum regulator (EVR) valve and a differential pressure (DP) sensor. The DP sensor measures a differential exhaust pressure at locations upstream and downstream of an orifice in a gasket sealing the EGR system module to an intake manifold. The upstream measurement location is aligned with and particularly spaced from the orifice.

Abstract: A fan shroud structure 10 including a shroud body 12 having a pair of opposing first sides 14 and a pair opposing second sides 16. The first sides 14 are joined with the second sides 16 at corners 18 so as to form a box-like configuration defining an interior space 20. The shroud body has a front end constructed and arranged to be disposed adjacent to a condenser and a back end constructed and arranged to be disposed adjacent to a radiator. Generally annular wall structure 26 is within the interior space and is constructed and arranged to receive blades of a fan within bounds thereof. Vortex preventing structure 40 is provided in each corner near the back end. The vortex preventing structure is constructed and arranged to prevent large scale eddy current generation of air in the corners as air enters the radiator. Air deflecting structure 50 is provided in each corner near the front end.

Abstract: A system and a method for recirculating a flow of exhaust gases. The system comprises a passage through which the exhaust gas flow passes, a valve movable in the passage between a generally open configuration and a generally closed configuration, an actuator operatively connected to the valve, and a fail-safe returning the valve to one of the generally open and generally closed configurations if the actuator is disabled. The generally open configuration of the valve substantially permits the exhaust gas flow to pass through the passage, and the generally closed configuration of the valve substantially prevents the exhaust gas flow from passing through the passage. The actuator includes a one-way driver and a release to move the valve between the generally open and generally closed configurations and to vary the exhaust gas flow though the passage. The method comprises energizing the actuator with a power supply, and moving the valve to a fail-safe position if the power supply fails.

Abstract: A method of calibrating an integrated pressure management apparatus having a chamber with an interior volume varying in response to fluid pressure in the chamber. A diaphragm partially defining the chamber is displaceable between first and second configurations in response to fluid pressure variations around a certain pressure level. A resilient element applies a force biasing the diaphragm a first configuration and a switch is actuated by the diaphragm in the second configuration. The method includes connecting the chamber to a pressure source at a known pressure level, and adjusting resilient element such that the switch is actuated at the known pressure level.

Abstract: The present invention provides an assembly for providing a variable output torque based upon a constant input force. The assembly includes an actuator for providing a constant input force and at least one link operatively coupled to the actuator and a pivot point such the constant input force is converted to the variable output torque.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

Abstract: Apparatus for and method of exhaust gas recirculation in an internal combustion engine that operates with charge air boost. An EGR valve has an inlet port communicated to the engine exhaust system upstream of a throttle valve in the tailpipe and an outlet port communicated to the engine intake system. The throttle valve is controlled to selectively restrict exhaust gas flow through the tailpipe so as to maintain the difference between pressure at the EGR valve inlet and pressure at the EGR valve outlet substantially unaffected by changes in pressure in the intake system and in the exhaust system. The invention is particularly suited for a turbocharged diesel engine.

Abstract: A turbomachine for moving air comprising includes a shroud disposed about a longitudinal axis and a rotor assembly mounted for rotation about the longitudinal axis. The rotor assembly has a plurality of blades and tips of the blades are coupled to an annular band. The annular band is disposed with respect to the shroud so as to define a gap extending continuously between an outer surface of the annular band and an inner surface of the shroud. A seal structure extends from the inner surface of the shroud and into the gap. The seal structure has a density sufficient to reduce swirl in recirculating airflow and to minimize air leakage across the gap.