scholarly journals Medium Truck Duty Cycle Data from Real-World Driving Environments: Final Report

2012 ◽  
Author(s):  
Mary Beth Lascurain ◽  
Oscar Franzese ◽  
Gary J Capps ◽  
Adam Siekmann ◽  
Neil Thomas ◽  
...  
Keyword(s):  
Real World ◽  
Duty Cycle ◽  
Final Report

scholarly journals In for the Long Haul

1999 ◽  
Vol 121 (02) ◽  
pp. 60-61
Author(s):  
Phil Kittredge ◽  
Thomas Urbas ◽  
Wayne Shintaku
Keyword(s):  
Real Time ◽  
Real World ◽  
Duty Cycle ◽  
Experimental Mechanics ◽  
Heavy Vehicle ◽  
Heavy Duty ◽  
The Real ◽  
Clutch Pedal ◽  
Heavy Duty Truck ◽  
Comprehensive Data

This article focuses on the fact that engineers at Meritor Automotive decided to learn how truck components really held up on the highways. So they outfitted an 18-wheeler with the company’s products for a 24,000-mile trial, in real time and in the real world. According to Meritor, the comprehensive data generated by the test has spurred improvements in brake components, clutches, drivelines, axles, and transmissions. The company claims that the data opens opportunities for improvements in virtually every type of heavy-duty truck component that Meritor builds. The engineers in Meritor’s experimental mechanics unit enlisted support from all the groups in the heavy vehicle division. The use of a channel to record clutch pedal displacement helped engineers improve their model for determining the number of clutch applications in a line-haul duty cycle. Meritor expects that this information will lead to improved durability of several clutch components.

Development of a Duty Cycle for the Design and Optimization of Advanced, Heavy-Duty Port Drayage Trucks

2017 ◽  
Vol 2609 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Pascal Amar ◽  
Parthav Desai ◽  
Aravind Kailas ◽  
Jean-Baptiste Gallo
Keyword(s):  
Real World ◽  
Duty Cycle ◽  
Greenhouse Gas Emission ◽  
Aerodynamic Drag ◽  
Electrical Power ◽  
Rolling Resistance ◽  
Conventional Vehicle ◽  
Design And Optimization ◽  
Vehicle Simulation ◽  
Drayage Trucks

Hybrid electric and electric trucks are potential technology solutions for reducing emissions at ports. However, developing an advanced, low-emission technology driveline entails thoroughly understanding typical truck operations in the real-world environment. This paper presents the work performed to develop a novel, more representative drayage duty cycle that characterizes drayage truck operations in the ports of San Pedro Bay in California. Unlike a conventional vehicle, an optimized hybrid driveline requires detailed understanding not only of torque requirements and vehicle speeds but also of the potential recovery of dynamic brake energy, charging opportunities, stopping and idling times, and many other operational requirements. Keeping this in mind, the duty cycle presented in this paper incorporated real-world, near-dock activities of Class 8 drayage trucks such as daily hours of operation, mileage, altitude profiles of routes, and idling and key-off patterns. The empirical duty cycle model was subsequently integrated with a complete vehicle simulation to explore the best solutions to minimize energy consumption for drayage applications in and around the ports. The analysis presented indicates that trucks spent most of the generated power in overcoming aerodynamic drag and rolling resistance of tires for a complete drayage shift and that electrical auxiliary loads dominated for near-dock operations because of idling and low-speed profiles. Therefore, achieving zero-emission near-dock operations entails focusing on auxiliary loads and rolling resistance. By using simulations, it was estimated that a hybrid truck with electrical power limited to about 100 kW could deliver a greenhouse gas emission reduction of about 30%.

Interactive Digital Experience as an Alternative Laboratory (IDEAL): Creative Investigation of Forensic Biomechanics

2021 ◽  
Vol 37 (2) ◽  
pp. 163-170
Author(s):  
Valerie A. Troutman ◽  
Michele J. Grimm
Keyword(s):  
Real World ◽  
Biomechanical Analysis ◽  
Final Report ◽  
Forensic Investigation ◽  
Problem Statement ◽  
Forensic Biomechanics ◽  
Traditional Problem ◽  
Improved Learning ◽  
Simple Interaction ◽  
The Ideal

An Interactive Digital Experience as an Alternative Laboratory (IDEAL) was developed and implemented in a flipped biomechanics classroom. The IDEAL challenge problem was created to more closely simulate a real-world scenario than typical homework or challenge problems. It added a more involved story, specific characters, simple interaction, and student-led inquiry into a challenge problem. Students analyzed musculoskeletal biomechanics data to conduct a forensic biomechanics investigation of an individual who suffered a fracture. Students ultimately approached the IDEAL problem with a greater appreciation and enjoyment than previous open-ended challenge problems—those that were assigned in a traditional problem-statement manner—throughout the semester. Students who were more fully engaged in the IDEAL challenge problem, as evidenced by the fact that they requested all of the evidence on their own, also performed better on the final report grade. This signals improved learning with respect to biomechanical analysis when the students were creatively participating in the storyline surrounding the forensic investigation.

scholarly journals Pathways to housing tax reform

2018 ◽  
Author(s):  
richard eccleston ◽  
Julia Verdouw ◽  
Kathleen Flanagan ◽  
Neil Warren ◽  
Alan Duncan ◽  
...  
Keyword(s):  
Real World ◽  
Tax Policy ◽  
Tax Reform ◽  
Final Report ◽  
Implementation Time ◽  
Time Frames

This research is the final report of the AHURI Inquiry into ‘Pathways to Housing Tax Reform in Australia’. It features real-world modelling and implementation time frames to steer tax settings that progress the efficiency, equity and sustainability of housing tax policy, and also presents meaningful long-term political pathways to achieve these outcomes.

scholarly journals Medium Truck Duty Cycle Data from Real-World Driving Environments: Project Interim Report

2011 ◽  
Author(s):  
Oscar Franzese ◽  
Mary Beth Lascurain ◽  
Gary J Capps
Keyword(s):  
Real World ◽  
Duty Cycle ◽  
Interim Report

Replications can cause distorted belief in scientific progress

2018 ◽  
Vol 41 ◽  
Author(s):  
Michał Białek
Keyword(s):  
Real World ◽  
Scientific Progress ◽  
The Public ◽  
Psychological Science

AbstractIf we want psychological science to have a meaningful real-world impact, it has to be trusted by the public. Scientific progress is noisy; accordingly, replications sometimes fail even for true findings. We need to communicate the acceptability of uncertainty to the public and our peers, to prevent psychology from being perceived as having nothing to say about reality.

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