Abstract: Exhaust systems are described. In examples, an exhaust flow path couples exhaust ports with one or more turbochargers of an engine. The exhaust flow path may have a portion flowing through a cylinder head (e.g., couplable to the exhaust ports) and a portion flowing through an exhaust manifold (couplable to the cylinder head and the turbocharger(s)). The flow paths may be shaped to reduce the sharpness of turns between the exhaust ports and the turbocharger(s). For example, curves along the flow path may be less than 90 degrees or have a minimum curve radius, which may vary along the flow path. Additionally, at least two, independent flow paths may exist between the exhaust ports and the turbocharger(s). The cross-sectional shape of any part of the flow path may be elliptical, including at inlets and outlets.
Abstract: Systems and methods for transferring a driver profile between various vehicles. A driver profile is created in association with a driver of a first vehicle having a mobile device that executes a mobile application configured to communicate with and receive driver-adjusted configuration settings associated with operation of the first vehicle. The mobile application may store the adjusted configuration settings in the driver profile. The mobile application may be further configured to communicate with a plurality of other vehicles. In some examples, when the driver operates a second vehicle of the plurality of other vehicles, the mobile application can map the adjusted configuration settings in the driver profile to a set of adjusted configuration settings for the second vehicle. For example, the second vehicle may adjust various configuration settings of the second vehicle based on the received adjusted configuration settings.
Abstract: A heavy-duty truck has a diesel engine, an exhaust after-treatment system, and an engine control unit. The exhaust after-treatment system includes a close-coupled selective catalytic reduction system and an underbody selective catalytic reduction system, a first NOx sensor upstream of the close-coupled selective catalytic reduction system, a second NOx sensor between the two selective catalytic reduction systems, and a third NOx sensor downstream of the underbody selective catalytic reduction system. The engine control unit may perform methods allowing intrusive diagnostics to be performed on exhaust gas NOx sensors using the selective catalytic reduction systems during normal operation of the heavy-duty truck.
Type:
Grant
Filed:
August 25, 2020
Date of Patent:
January 23, 2024
Assignee:
PACCAR Inc
Inventors:
Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart, Maarten Meijer, Varun Ramesh
Abstract: Controlling exhaust after-treatment in a heavy-duty motor vehicle includes operating a diesel engine of a heavy-duty truck such that the diesel engine generates an exhaust gas flow that enters an exhaust after-treatment system of the heavy-duty truck, the exhaust after-treatment system including a selective catalytic reduction system, measuring a level of NOx gases in the exhaust gas flow downstream of the selective catalytic reduction system, and controlling a diesel exhaust fluid injector upstream of the selective catalytic reduction system to inject diesel exhaust fluid into the exhaust gas flow upstream of the selective catalytic reduction system at an injection rate that is based on the measured level of NOx gases.
Type:
Grant
Filed:
June 1, 2022
Date of Patent:
January 23, 2024
Assignee:
PACCAR Inc
Inventors:
Cynthia Chaffin Webb, John Lyle Lahti, Charles Wayne Reinhardt Swart
Abstract: In some embodiments, techniques for updating a model that represents turning dynamics of a vehicle are provided. In some embodiments, an initial location and orientation of the vehicle with respect to an object outside the vehicle are determined using information from environment sensors including but not limited to image sensors and/or range sensors. In some embodiments, vehicle state information including but not limited to steering angle and wheel speed is received before determining a new location and orientation of the vehicle with respect to the object. In some embodiments, the model is updated using the initial location and orientation, the new location and orientation, and the vehicle state information.
Type:
Grant
Filed:
June 1, 2018
Date of Patent:
January 23, 2024
Assignee:
PACCAR Inc.
Inventors:
Stan Delizo, Ted Scherzinger, Yen-Lin Han, Austin Chong, Christian Heussy, Caroline Hofgaard, Oleksiy Khomenko, Pauline Shammami, Kirstin Schauble
Abstract: Systems, methods and computer readable storage media provide flexible vehicle status notifications via an instrument cluster displayed on an in-vehicle screen. In some examples, when a non-displayed gauge goes into an out-of-parameter or warning range, the gauge may be dynamically shown in the out-of-parameter or warning state in a container position assigned to the gauge in another display or in a dynamic container position in the instrument cluster. In some examples, a popup notification may be provided to inform the driver of a condition. When there are multiple notifications, they may be grouped into definable severity classifications and prioritized so that a notification determined to be a most important message at the time is presented to the driver in a notification zone central to a driver's field of vision on the instrument cluster that allows for reusing screen space for providing warning and information from a range of data sources.
Type:
Grant
Filed:
October 9, 2020
Date of Patent:
January 2, 2024
Assignee:
PACCAR Inc.
Inventors:
Steven Karl Jahns, Ryan Anthony Reed, Jonathan Scott Duncan, Jon Forrest Acton, Jacob Michael White, Raeef Hesham Wahib Barsoum, Brett Grant Kellerstedt, Ian Ramsay Hunt, Hervé Jen Raymond Cecchi, Anna-Magdalena Schatz, Christina Nenke, Marc George Wilczak, Nicole Johnson
Abstract: Exhaust systems are described. In examples, an exhaust flow path couples exhaust ports with one or more turbochargers of an engine. The exhaust flow path may have a portion flowing through a cylinder head (e.g., couplable to the exhaust ports) and a portion flowing through an exhaust manifold (couplable to the cylinder head and the turbocharger(s)). The flow paths may be shaped to reduce the sharpness of turns between the exhaust ports and the turbocharger(s). For example, curves along the flow path may be less than 90 degrees or have a minimum curve radius, which may vary along the flow path. Additionally, at least two, independent flow paths may exist between the exhaust ports and the turbocharger(s). The cross-sectional shape of any part of the flow path may be elliptical, including at inlets and outlets.
Abstract: An access panel at and on a cab step of a vehicle is provided for access to a compartment of the vehicle. In some instances, the access panel includes a tread portion and a riser portion such that the access panel has a substantially L-shape. A pair of hinge components are coupled to an internal surface of the access panel such that the access panel can be hingedly displaced between a closed position and an opened position. In the closed position, the access panel covers and protects the compartment within the vehicle, and in the opened position the access panel provides a user or mechanic access to the compartment. The compartment may contain wiring, batteries, gears, etc., that need to undergo routine maintenance, emergency fixes, or diagnostic tests.
Type:
Grant
Filed:
November 30, 2020
Date of Patent:
December 26, 2023
Assignee:
PACCAR Inc
Inventors:
Jordan Michael Fisher, Jon David Polzin, Piotr Stegawski, Nicholas Coe Outlaw
Abstract: A system, method, and computer readable storage device are provided for providing a dynamic tachometer. Based on various signal inputs from a plurality of data sources, a tachometer may be dynamically modified to include visual information and assistance to the driver in relation to the vehicle's engine speed (i.e., revolution speed of the vehicle's crankshaft). The tachometer may include one or a combination of: dynamic shift point indicators, a target engine speed range indicator, an overspeed indicator, and a power take-off mode indicator.
Type:
Grant
Filed:
October 9, 2020
Date of Patent:
November 28, 2023
Assignee:
PACCAR Inc.
Inventors:
Steven Karl Jahns, Ryan Anthony Reed, Jonathan Scott Duncan, Josef Lotz, Tristan Thomas Pyle, Derek Scott Sancer, Jon Forrest Acton, Jacob Michael White, Hervé Jen Raymond Cecchi, David Michael Gauch, Anna-Magdalena Schatz
Abstract: Aspects of systems, method, and computer-readable storage media are described herein that are configured to provide operator fleet performance benchmarking and analytics. A fleet analytics system may include user-friendly front end client application with which a non-technical user may interface, and a back end analytics and visualization system that is deployed on the cloud and offered as a service to determine a subset of ‘like operators’ to utilize as a baseline in a benchmark analysis, to benchmark a target operator's performance against the subset of like operators, determine analytics resulting from the benchmark analysis, and to generate visualizations of the analytics for display to the user/operator.
Type:
Grant
Filed:
April 23, 2021
Date of Patent:
November 28, 2023
Assignee:
PACCAR Inc.
Inventors:
Varun Ramesh, Carl Hergart, Cynthia Chaffin Webb, Jorge Rafael Lozada Ramirez
Abstract: Generally described, an articulated wheel fairing system for a vehicle having a steering system with a neutral steering input and a non-neutral steering input is provided. The articulated wheel fairing system provides clearance to the steer tire and wheel of the vehicle during non-neutral steering input, such as when the vehicle is turning at slower road speeds. The wheel fairing system generally includes an articulating fairing panel configured to cover at least a portion of the steer wheel, where the fairing panel movable from a first position adjacent to the steer wheel, such as when the vehicle is traveling at higher road speeds, to a second position outwardly from the first position. The wheel fairing system includes a mechanical linkage or actuator coupled to the fairing panel and the vehicle and configured to move the frame between the first position and the second position relative to the vehicle.