Victor Langarica Perez

US Patent:

20230086575, Mar 23, 2023

Filed:

Sep 23, 2021

Appl. No.:

17/483307

Inventors:

- Bellevue WA, US
Vedran Curgus - Bellingham WA, US
Victor Perez - Bellingham WA, US

Assignee:

PACCAR Inc - Bellevue WA

International Classification:

B60W 50/06
B60W 40/06

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.

US Patent:

20190040813, Feb 7, 2019

Filed:

Aug 4, 2017

Appl. No.:

15/669657

Inventors:

Dylan Scott Kleist - Bellingham WA, US
Victor Luis Perez - Bellingham WA, US
Charles Wayne Reinhardt Swart - Bellingham WA, US

Assignee:

PACCAR Inc - Bellevue WA

International Classification:

F02D 41/22
F02D 9/10
F02D 41/00

Abstract:

In some embodiments, a vehicle is provided having improved fuel economy by using gradual engine speed control. Once a governor activation threshold is crossed, a dynamic engine speed limit that gradually increases over time is implemented. In some embodiments, if the engine speed does not continue to rise over time, increases in the dynamic engine speed limit may be paused. In some embodiments, if the engine speed increases at too great of a rate for too long of a time, the dynamic engine speed limit may be reset. In some embodiments, increasing, pausing, and/or resetting the dynamic engine speed limit allows gradual acceleration while also avoiding torque lock.