Abstract:
An electromechanically actuated valve (12) for use as an intake or exhaust valve in an internal combustion engine. The valve (12) is actuated by a electromechanical actuator assembly (18) which includes a first electromagnet (22) and a second electromagnet (30). A disk (38) is slidably mounted to the valve (12) in a gap between the first and second electromagnets, with a pair of stops (36, 40) limiting its travel along the valve stem (15). The gap between the stops (36, 40) is large enough to allow for manufacturing tolerances and temperature changes in the assembly, with a secondary spring (56) and spring stop (54) acting to create soft landings, reducing noise and wear concerns. A first spring (48), mounted between the cylinder head (14) and disk (38), and a second spring (50), mounted between the disk (38) and an actuator housing (20), create an oscillatory system which drives most of the valve movement during engine operation, thus reducing power requirements to actuate the valves while increasing the responsiveness of the valves.
Abstract:
A collision protection system for protecting a pedestrian that uses a sensor that provides a width output signal that varies in relation to the width of an object contacting the vehicle. The sensor includes a resistive conductor that is shorted out by a conductive conductor of a portion of the length of the resistive conductor. A second sensor may be provided that provides an output only upon exceeding an impact threshold. Several sensors may be used to provide an indication of the location and width of the object contacted.
Abstract:
A brake fluid pressure relief assembly (50) for a brake system (10) including a pedal assembly (12) employs first and second valves (52, 54) to provide controlled collapse of a brake pedal pad (14) when both a predetermined deceleration limit is exceeded and a predetermined pressure level is exceeded in a hydraulic brake fluid. The first valve (52) is actuated by an inertial mass (84) acting against a first spring (86). With the first valve in the open position, hydraulic fluid passes into a reservoir (68) whose volume is a dependent on the position of the second valve (54). The second valve (54) opens when the fluid pressure in the reservoir exceeds a predetermined pressure limit and compresses a piston (100) against a second spring (114). Accordingly, the forces that can be communicated through the pedal system 10 are reduced during a collision.
Abstract:
A passive automatic overhead door system (10) which automatically activates a remote door operating device (17) through communication with a global positioning system (18). A vehicle (12) equipped with a GPS receiver (14) and a GPS controller (16) is capable of communicating information to automatically activate a remote door operating device (17) based on predefined vehicle locations and predefined travel directions stored in the GPS controller (16). After programming the GPS controller (16) through a user interface (19) located on board the vehicle (12), there is no further action required from a vehicle's operator in order to activate the remote door operating device (17).
Abstract:
An electromechanically actuated valve (12) for use as an intake or exhaust valve in an internal combustion engine. The valve (12) is actuated by a electromechanical actuator assembly (18) which includes a first electromagnet (22), second electromagnet (30) and third electromagnet (32). A disk (38) is fixedly mounted to the valve (12) in a gap between the second and third electromagnets. The second electromagnet (30) is slidable between the first electromagnet (22) and a stop (42), allowing the gap between the second electromagnet (30) and the third electromagnet (32) to vary. This allows for multiple valve lifts. A second spring (50), mounted between the second electromagnet (30) and disk (38), and a third spring (32), mounted between the disk (44) and an actuator housing (20), create a balanced oscillatory system which drives most of the valve movement during engine operation, thus reducing power requirements to actuate the valves while increasing the responsiveness of the valves.
Abstract:
A transportation system includes a guideway lane and a power cable assembly extending along the guideway lane. The system further includes a vehicle configured to travel on the guideway lane. The vehicle includes a self-centering transformer that is movable along the cable assembly and configured to cooperate with the cable assembly to transfer power to the vehicle. In addition, the transformer includes a magnet array that creates a magnetic field for centering the transformer-with respect to the cable assembly as the transformer moves along the cable assembly.
Abstract:
A method is provided for controlling operation of a vehicle on a guideway system, wherein the vehicle includes a first element of a linear induction motor and an alternate power source, and the guideway system has an acceleration section including a second element of the linear induction motor, and a computer control system. The method includes utilizing the second element in cooperation with the first element so as to accelerate the vehicle on the acceleration section of the guideway system, and providing speed instructions to the vehicle using the computer control system so as to cause the vehicle to use the alternate power source to maintain a desired cruising speed on a main section of the guideway system.
Abstract:
An electric propulsion system for a vehicle having an electric drive motor. A generator supplies electric current to the motor. A dual shaft turbine engine having a compressor and a gasifier coupled with a first shaft and a power turbine, flywheel and generator coupled to a second shaft provide electric current to the electric drive motor. The first and second drive shafts are uncoupled and are allowed to spin independently of one another. Exhaust gases from the gasifier turn the power turbine, thus the turning power turbine turns the generator and flywheel as a unit.
Abstract:
An electromechanically actuated valve (12) for use as an intake or exhaust valve in an internal combustion engine. The valve (12) is actuated by a electromechanical actuator assembly (18) which includes a first electromagnet (22), second electromagnet (30) and third electromagnet (32). A first disk (38) is mounted to the valve (12) in a gap between the second and third electromagnets, and a second disk (44) is slidably mounted to the valve (12) between an insert (17) and the first electromagnet (22). An extension (42) on the second electromagnet (30) extends to the second disk (44), allowing the second disk (44) to move the second electromagnet (30) relative to the third electromagnet (32), thereby changing the gap and thus the valve lift. A first spring (48), mounted between the second electromagnet (30) and first disk (38), and a second spring (50), mounted between the first disk (38) and an actuator housing (20), create an oscillatory system which drives most of the valve movement during engine operation, thus reducing power requirements to actuate the valves while increasing the responsiveness of the valves.
Abstract:
A method of deploying a passenger side airbag as a function of the actual mass of the occupant on the passenger seat. This is accomplished by providing force sensors at one or more of the anchor pieces at which a seat belt is connected to the vehicle. The sensors may be strain gauges that measure the deflection of bolts connecting the ends of the seat belt to the anchor pieces. By sizing the nominal resistance of strain gauges at two anchor pieces, the two resistors can be put in a series circuit such that only the sum of the two resistances need be measured. The measurements obtained are then used to obtain the vertical components of force due to the seat belt. This value is then be subtracted from the total vertical force measured by a seat cushion weight sensor to determine the mass of the seat occupant.