Abstract: A soft hybrid-electric vehicle power supply circuit (14) is provided. The circuit includes a load sensor (19), which generates a load signal. A high-voltage bus (26) supplies a high voltage for a high-voltage load (30) and a low-voltage bus (28) is electrically coupled to and supplying a low-voltage to a low-voltage load (32). A converter circuit (24) is electrically coupled to the high-voltage bus (26), the low-voltage bus (28), and a high-voltage load (30). The converter circuit (24) maintains a predetermined minimum voltage level on the high-voltage load (30) by switching between the high-voltage bus (26) and the low-voltage bus (28) in response to the load signal. A method of maintaining the predetermined minimum voltage level is also provided.

Abstract: A variable compression ratio connecting rod for an internal combustion engine includes a large end adapted for attachment to a crankshaft and a small end adapted for attachment to a piston. An adjustable four-bar link system extends between and links the large end and the small end so as to permit the length of the connecting rod to be adjusted through the action of an adjustable toggle link and an eccentric which is driven by inertia forces acting upon the connecting rod.

Abstract: An air vent 10 for a vehicle air ventilation system and which comprises a housing 11 having an air inlet 12 and an air outlet 13, an air flow control valve 15 located in the inlet 12, and a screen 17 comprising a plurality of slats 18–21 located in the outlet 13. The slats are moveable by a control wheel 28 from a closed condition, in which air flow through the outlet 13 is impeded, to an open condition allowing air flow through the outlet 13, the control wheel 28 also operating the valve 15 to permit the flow of air prior to opening the slats, the air flow passing through slots 22 in at least some of the slats.

Abstract: A system and method to control engine valves of an internal combustion engine is shown. Electromechanical valves are controlled in a manner to reduce hydrocarbon emissions of an internal combustion engine. Further, the method can adjust valve operation to account for vehicle exhaust system design.

Abstract: A method of diagnosing electrical degradation of a welding system. The method includes determining whether a predetermined number of welds has been executed, positioning welding electrodes, applying and measuring current applied through the electrodes, and comparing the measured current to a threshold value.

Abstract: An emergency trunk release handle for an automobile displays the graphics explaining the use and function of the handle by cutting out the material from the handle. Forming the emergency release handle from a phosphorescent plastic material that can be formed by a molding process, such as injection molding, the cut-out graphics show as darkened areas, when viewed in the dark confines of an automobile trunk, to provide a high degree of visibility for the graphics. The graphics are also visible when seen against the dark carpet in the interior of an opened trunk cavity. The formation of the graphics is accomplished by coring the mold in the configuration of the desired graphics and by forming the plastic material in the mold around the cores. The resultant handle structure is thus formed in a cost effective manner that reduces the process failure potential during the manufacturing of the handle.

Abstract: Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, catalyst design, and exhaust system design.

Abstract: A system and method is described for determining degradation of a diesel particulate filter in an engine exhaust system. The method uses information indicative of a regeneration rate, such as regeneration duration. From this, it is possible to determine when particulate filter operation has degraded.

Abstract: A system and method to control engine valve timing of an internal combustion engine. Electromechanical valves are controlled in a manner to increase fuel economy. Further, the method can adjust valve operation to regulate valve temperature.

Abstract: A wheel suspension with a transverse leaf spring (1a–1c) which is articulated at both ends on wheel carriers. The transverse leaf spring shaped symmetrically to the vehicle longitudinal axis (L) has a curved profile with a middle region (1a) offset parallel to the wheel axis. The transverse leaf spring is supported on the vehicle body by means of two transverse leaf spring bearings (2) with high lateral rigidity. The curved profile of the transverse leaf spring with four arcs (1d, 1e) allows for a bending of the middle region (1a) to take place essentially without a change in the tread width.

Abstract: The present invention comprises an oil system for supplying and controlling oil flow in an internal combustion engine having a variable camshaft timing (VCT) device, comprising a pressurized oil supply providing lubricating oil to the engine and the variable cam timing device and an oil circuit connecting the oil pump with the VCT and a main oil gallery of the engine via a valve apparatus. The valve apparatus responds to oil pressure near the outlet of the oil pump so that oil flows to the main oil gallery when oil pressure is above a predetermined pressure. When the VCT requests oil flow, oil pressure in the system drops. If the pressure drops below the predetermined pressure, the valve apparatus causes a reduction in flow to the main gallery.

Abstract: Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, catalyst design, and exhaust system design.

Abstract: A stability control system (24) for an automotive vehicle as includes a plurality of sensors (28–37) sensing the dynamic conditions of the vehicle and a controller (26) that controls a distributed brake pressure to reduce a tire moment so the net moment of the vehicle is counter to the roll direction. The sensors include a speed sensor (30), a lateral acceleration sensor (32), a roll rate sensor (34), and a yaw rate sensor (20). The controller (26) is coupled to the speed sensor (30), the lateral acceleration sensor (32), the roll rate sensor (34), the yaw rate sensor (28). The controller (26) determines a roll angle estimate in response to lateral acceleration, roll rate, vehicle speed, and yaw rate. The controller (26) changes a tire force vector using brake pressure distribution in response to the relative roll angle estimate.

Abstract: The present invention provides a method for masking noise in a motor vehicle that has a component that produces noise when operated. The method of the invention comprises monitoring the speed of the vehicle, and increasing the movement of the moveable part when the vehicle is at a predetermined speed. It is well known that vehicles naturally produce more noise as the speed of the vehicle is increased. The invention also provides a noise masking system that exploits the method of the invention.

Abstract: A method of recording a recommended plurality of audio signals (40) in an entertainment sound system (42) associated with an automotive vehicle (12)includes a central server (14) for processing a plurality of data (16) associated with a plurality of audio signals (18). A data input (22) within the vehicle (12) receives the plurality of data (16). An audio input (20) within the vehicle (12) receives the plurality of audio signals (18). The plurality of data (16) is transmitted from the central server (14) through said data input (22) to a controller (24) within the automotive vehicle (12). Furthermore, the plurality of data (16) is transmitted through the data input (22) to the controller (24). A preferred plurality of audio signals (34) received from the audio input (20) is acoustically played on the entertainment sound system (42). Then, a preferred plurality of data (36) associated with the preferred plurality of audio signals (34) is recorded onto a user profile stored on an electronic medium (30).

Abstract: A tire pressure monitoring system (12) for a vehicle (10) has a plurality of tires (14a–d) in respective rolling locations having a respective plurality of tire transmitters (16a–d) that generate a respective plurality of transmitter identification signals. A respective plurality of initiators (20a–d) are fixedly attached to the vehicle at a respective plurality of locations. A controller (22) activates the plurality of initiators and receives a plurality of respective sensor signals having respective tire identifications. When the plurality of respective sensor signals is indicative of an initial status and the respective plurality of tire identification signals is not existing in a memory, the plurality of sensor signals are configured and stored in the memory. When the plurality of respective sensor signals is indicative of an initial status and the plurality of respective tire identification signals is existing in the memory, the controller confirms the first sensor signal.

Abstract: A cooling system for a battery in a vehicle does not use air from the vehicle passenger compartment, but rather, takes in ambient air from outside the vehicle. When the temperature of the ambient air outside the vehicle is low enough, the air is moved through a duct system by a pair of fans and blown across a battery assembly. When the temperature of the ambient air outside the vehicle is too warm to cool the battery directly, it is first passed through an evaporator coil where it exchanges heat with a refrigerant, prior to being blown across the battery assembly. The cooling air may be recirculated across the battery assembly, or exhausted from the vehicle through an air extractor.

Abstract: A yaw stability control system (18) is enhanced to include roll stability control function for an automotive vehicle and includes a plurality of sensors (28–39) sensing the dynamic conditions of the vehicle. The sensors may include a speed sensor (20), a lateral acceleration sensor (32), a yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) is coupled to the speed sensor (20), the lateral acceleration sensor (32), the yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) generates both a yaw stability feedback control signal and a roll stability feedback control signal. The priority of achieving yaw stability control or roll stability control is determined through priority determination logic. If a potential rollover event is detected, the roll stability control will take the priority.