Abstract:
Systems and methods for generating multiple vehicle communications in response to an event include a vehicle having a first embedded modem, a second embedded modem, and a processor. The processor is configured to identify occurrence of a predetermined event. Responsive to occurrence of the predetermined event, the processor is configured to wirelessly transmit a vehicle location offboard the vehicle via a voice call established by the first embedded modem and via a data call established by the second embedded modem for a remote monitoring service.
Abstract:
A method according to an exemplary aspect of the present disclosure includes, among other things, learning an energy consumption efficiency of a vehicle in an energy domain by periodically filtering a ratio of a distance traveled to an energy consumed. The learning step is executed by a control module configured to monitor the energy consumption efficiency.
Abstract:
A three-way catalyst including a mixture of nickel and copper is provided for reducing carbon monoxide, hydrocarbon emissions, and nitrogen oxides from vehicle engine exhausts. The catalyst is impregnated onto a carrier substrate which is non-reactive with nickel and copper. When used in a vehicle exhaust gas treatment system, the nickel-copper catalyst provides improved efficiency in reducing CO, HC, and NOx emissions over the use of conventional three-way-catalysts and provides enhanced oxygen storage capacity (OSC) and water-gas-shift (WGS) functions.
Abstract:
A vehicle electrical power system includes a variable voltage converter. The variable voltage converter includes an inductor assembly having a housing that defines a chamber containing dielectric fluid. An inductor is disposed within the chamber and is in contact with the fluid. The power system also includes a pump configured to circulate the dielectric fluid to cool the inductor.
Abstract:
The present invention discloses a hydrocarbon-removing component for the air intake system of an internal combustion engine which removes hydrocarbons escaping a vehicle when the engine is not in use. The hydrocarbon-removing component of the present invention includes a duct with a hydrocarbon-removing material incorporated in an inner surface. The preferred hydrocarbon-removing material include activated carbon and zeolites.
Abstract:
A method and system for controlling engine speed during a vehicle launch (from a rest condition to a moving condition), such vehicle having the engine is coupled to an automatic shifting manual transmission. The method comprises determining a spark timing offset based on one or more of engine speed, a time rate of engine speed, relative air charge, engine coolant temperature, accelerator pedal position, and a time rate of change of accelerator pedal position. A new spark timing is determined as the base spark timing minus the spark timing offset. By adjusting spark timing based primarily on a time rate of change of engine speed, engine speed fluctuations arising during a clutch engagement associated with vehicle launch are largely attenuated.
Abstract:
Systems and methods for estimating the bias and scale factor in a speed sensor and pitch sensor using a modified adaptive filter. A filter learns adaptively in a random manner to estimate the errors in the vehicle speed and pitch angle. The aiding measurements used in this approach are exemplarily DGPS travel distances. The filter adaptively estimates error source values during the availability of DGPS, and can then use these estimates to aid an INS during DGPS outages.
Abstract:
The present invention discloses a method for reducing NOx in exhaust gases of an internal combustion engine. The purpose of this invention is to convert engine out NOx (approximately 90% NO in diesel exhaust) into roughly a 50:50 mixture of NO and NO2, while simultaneously oxidizing engine-out hydrocarbons which interfere with the reduction of NOx by urea or ammonia. The present invention demonstrates that a 50:50 blend of NO and NO2 is reduced more rapidly and with higher efficiency than a gas stream which is predominantly NO. In addition, catalyst in an engine exhaust that is a 50:50 mixture of NO and NO2 is far more resistant to hydrothermal deterioration than using NO alone. In another embodiment of the present invention, a vehicle exhaust system utilizing the method of the present invention is provided.
Abstract:
A magnetorheological (MR) vibration damper for damping axial and rotational vibrations of an automotive steering system may include a housing encasing MR fluid therein and a gear-like rotor and orifice plate disposed within the housing. The rotor and orifice plate, which may be affixed to the steering wheel shaft, includes a plurality of gear-like teeth on its surface and a plurality of holes for producing shear and normal forces, respectively, on the MR fluid. Electric coils may be disposed within the housing for generating an electric field for activating the MR fluid. The MR vibration damper may be activated or deactivated by a controller by comparing a signal value from a steering wheel vibration sensor to a predetermined threshold value. The controller may be programmable by a user to increase or decrease the predetermined threshold value, so as to enable customization of driving feel.
Abstract:
A method for improving NOx conversion efficiency of a NOx-reducing catalyst by determining an accurate amount of reductant required is presented. The method includes calculating an initial reductant injection amount based on a steady state amount of NOx in the engine feedgas and adjusting the initial amount to compensate for transient NOx emissions. The compensation is initiated in response to an engine transient, such as impending acceleration or deceleration. This method further results in improved vehicle fuel economy.