Abstract: Dynamic throttle pedal filtering of a vehicle is provided. An automated throttle filtering system may be included in the vehicle that may operate to filter throttle pedal input based on detection of a rough driving surface. The rough driving surface detection may be based on an evaluation of wheel speed signals or an indication of traction loss. The throttle pedal input may be filtered corresponding to rough driving surface magnitude values determined based on the wheel speed signals. For example, filtered torque demand values may be determined based on the rough driving surface magnitude values and included in a torque demand request communicated to the vehicle's powertrain system. The resulting torque output may modulate an undesirable oscillating torque demand that may be generated in relation to operation of the vehicle on a rough driving surface.
Type:
Grant
Filed:
September 23, 2021
Date of Patent:
June 4, 2024
Assignee:
PACCAR Inc
Inventors:
Charles Wayne Reinhardt Swart, Vedran Curgus, Burton Edwin Waite, III, Victor Perez
Abstract: Examples of the present disclosure relate to techniques for headlamp heater control. In examples, a headlight assembly comprises a heater, which is used to prevent or remove condensation/precipitation on a lens of the headlamp assembly. Given it may be difficult for an individual to know when to manually turn the headlamp heater on, an electronic control unit (ECU) may evaluate a set of rules to determine when to automatically enable or disable the headlamp heater. The rules may be associated with atmospheric conditions outside the vehicle, the state of the vehicle (e.g., whether windshield wipers are turned on, whether windshield defog is enabled, whether a mirror heater is turned on, etc.), and/or user input received by an ECU of the vehicle, among other examples.
Abstract: Systems and methods for determining a position of a vehicle driver and adjusting one or more digital mirrors based on the determined position. According to examples, the position of the driver's eyes and/or head are sensed by one or more driver position sensors and determined by a driver position processor. An external camera captures images external to the vehicle, and a video processor crops, zooms, pans, and/or otherwise adjusts the images to be displayed based on the position of the driver's eyes and/or head.
Abstract: The present disclosure describes methods for evaluating NOx conversion efficiency of a close coupled SCR unit of an EAS including the close coupled SCR unit and a downstream SCR unit. The determined NOx conversion efficiency of the close coupled SCR unit is used to diagnose the close coupled SCR unit and or EAS and to control operation parameters of the EAS and/or internal combustion engine operably connected to the EAS.
Type:
Grant
Filed:
August 25, 2020
Date of Patent:
May 7, 2024
Assignee:
PACCAR INC
Inventors:
Charles Wayne Reinhardt Swart, Cynthia Chaffin Webb, Maarten Meijer, Varun Ramesh