Abstract: Systems and methods for detecting degradation of a sensor in a vacuum brake booster coupled to a manifold of an internal combustion engine include measuring an engine or vehicle operating parameter to detect operating or control conditions and detecting degradation of the sensor based on the engine or vehicle operating parameter. In one embodiment the operating parameter is a measured or estimated manifold pressure. A pressure drop across a check valve disposed between the brake booster and the intake manifold may also be considered.

Abstract: A system and method of real-time collision detection between solid geometric objects is provided. The system includes a computer system, a computer-generated geometric model and a haptic device in communication with the computer system having a haptic end effector for transmitting information between a user and the geometric objects. The method includes the steps of representing a moving object as a point cloud and a stationary object as a mesh, and partitioning the mesh into an organized data structure. The method also includes the steps of identifying a constraint set and a collision set. The method further includes the steps of rendering the constraint set by moving the moving object so that the set of active points do not penetrate into the mesh, and providing force feedback through the haptic device relative to the movement of the moving object to satisfy the constraint.

Abstract: A method for providing an oil change indication to an operator of an internal combustion engine having an exhaust-after-treatment system requiring regeneration, The method includes detecting regeneration events performed on the exhaust-after-treatment system; detecting oil temperature events each time unit an oil temperature is over a threshold value, and providing the oil change indication to the operator as a function of the detected regeneration events and the detected oil temperature events.

Abstract: An apparatus for the radial expansion and plastic deformation of a tubular member that includes a coating to reduce the frictional forces of expansion.

Abstract: A vehicle support structure for supporting engine compartment accessories such as a battery. The support structure includes a first tubular frame member having a transversely extending portion and a longitudinally extending portion that partially encompass an accessory tray. A second tubular frame member disposed at least in part adjacent to the first tubular frame member and having a transversely extending base support portion that extends below the accessory tray. The accessory tray is secured to the first tubular frame member and overlies the base support portion of the second tubular frame member. The structure reduces the weight and number of parts required to support accessories.

Abstract: A method for rapidly heating an emission control device in an engine exhaust uses excess air added to the exhaust via an air introduction device. After an engine cold start, the engine is operated to raise exhaust manifold temperature to a first predetermined value by operating the engine with a lean air-fuel ratio and retarded ignition timing. Once the exhaust manifold reaches the predetermined temperature value, the engine is switched to operate rich and air is added via the air introduction device. The added air and rich exhaust gas burn in the exhaust, thereby generating heat and raising catalyst temperature even more rapidly. The rich operation and excess air are continued until either engine airflow increases beyond a pre-selected value, or the emission control device reaches a desired temperature value. After the emission control device reaches the desired temperature, the engine is operated substantially around stoichiometry.

Abstract: In a motor vehicle driveline having an automatic transmission driveably connected to a transfer case whose output is continually connected to a first output, a clutch, selectively engaged in response to a control signal, driveably connects a second output to the first output. A digital computer continually monitors the occurrence of a change of clutch slip, input torque and a torque rate change to control the torque transmitted by the clutch to the second output. The control causes the clutch to transmit torque to the second output having a constant fraction of the input clutch torque and another portion that is proportional to the clutch slip. This result simulates the torque slip characteristics produced by transfer case having both a center differential mechanism and a viscous clutch.

Abstract: A safety system (10) for a host vehicle (12) includes a voice sensor (38) that detects voice signals from a vehicle occupant. An occupant classifier (30) determines a state of mind of the vehicle occupant. A controller (13) performs a safety countermeasure in response to the state of mind of the occupant including the transmission of the state of mind to a target vehicle. A vehicle voice control system (24) includes the voice sensor (38), which detects voice signals from the vehicle occupant. A speech classifier (32) monitors a speech characteristic, including a vehicle occupant identifiable and associated speech characteristic, in response to the voice signals and associates the voice signals with a vehicle related task in response thereto. A controller (13) performs the vehicle related task in response to the voice signals and the association.

Abstract: A method for selectively adjusting an amount of fuel to an engine in a vehicle is provided. The vehicle includes an electric machine operatively connected to the engine and capable of controlling a speed of the engine. The method includes providing an amount of fuel to the engine based at least in part on a desired output of the engine, which is based at least in part on a driver input. The electric machine is commanded to control the engine speed based at least in part on the driver input. An output error of the engine is determined based at least in part on the command to the electric machine. The amount of fuel provided to the engine is adjusted when at least one predetermined condition is met, including the output error of the engine being greater than a predetermined amount.

Abstract: A cooling system for an internal combustion engine mounted within a vehicle includes a radiator for rejecting heat to ambient air and an axial fan mounted within a fan shroud associated with a radiator. The fan has a stationary hub equipped with louvers which may be controlled so as to either block off or allow airflow through the hub, and consequentially through the radiator. In this manner, the airflow past the fan may be greatly increased when the vehicle is operated at a higher groundspeed, while decreasing the amount of power consumed by the fan.

Abstract: A method for quantifying droplet fluxes of a water mist spray uses different measuring apparatuses and compares the measurements of the two apparatuses with one another. One of the measuring apparatuses is an iso-kinetic sampling probe in which the air velocity of the portion of the water spray mist entering the probe is made equal to the air velocity of the water mist spray around the probe by connecting a source of vacuum to the probe. The drops of the spray entering the probe are prevented from passing out of the probe. The air velocity of the spray entering the probe is measured by an anemometer, the drops of the entering spray are collected in a reservoir, and the depth of water in the reservoir is measured by a differential pressure transducer. The output of the pressure transducer is sent to a computer that calculates the water collection rate based on the sectional area of the probe opening and the water collection rate in the reservoir.

Abstract: An electrical connector for mounting to an electronically controlled valve assembly of an internal combustion engine and for electrically connecting the valve assembly to a control system for the engine. The electrical connector has disposed in a housing thereof: a plurality of high current conductors for carrying relatively high current to the electromagnet coils of the valve assembly and a plurality of low current conductors for carrying relatively low current valve position sensing signals from the valve assembly; and a pair of electrical shields, one of the pair of shields being disposed around the plurality of high current conductors and the other one of the pair of shields being disposed around the plurality of low current conductors.

Abstract: A system and method for controlling the introduction of purge fuel vapor into a multi-cylinder internal combustion engine is provided. According to one aspect of the disclosure, a schedule for opening and closing an on-off, pulse-width-modulated, purge control valve is predetermined, and the purge control valve is opened and closed according to the predetermined schedule. According to one aspect of the disclosure, a predetermined schedule can include a repeating sequence of on-pulse frequencies.

Abstract: A method for controlling valves during an engine stop is presented. The valves are controlled in a manner that can quiet the engine during a stop. In addition, the valves may be selectively controlled to direct the contents of the cylinder in a desired direction so that engine emissions may be reduced.

Abstract: A method for controlling an engine coupled to a transmission is described. The method is especially suited for a transmission having at least one gear in which an over-running clutch is present. The invention describes a method for adjusting an engine operating parameter to maintain transmission input speed at or below a synchronous transmission input speed when the transmission is in the gear with the over-running clutch. The synchronous transmission input speed is based on transmission state and transmission output speed. Alternatively, vehicle speed can be used in place of transmission output speed.

Abstract: A system is described for improving engine and vehicle performance by considering the effects of exhaust conditions on catalyst particle growth. Specifically, engine operation is adjusted to reduce operating in such conditions, and a diagnostic routine is described for determining the effects of any operation that can cause such particle growth. Further, routines are described for controlling various vehicle conditions, such as deceleration fuel shut-off, to reduce effects of the particle growth on emission performance.

Abstract: An expandable tubular coupling apparatus includes a first expandable tubular member, a second expandable tubular member, and means for coupling the first expandable tubular member to the second expandable tubular member.