Research and Development of Heavy-Duty Truck Fueled With DME~Development and Performance of a DME Engine

Author(s):  
Yoshio Sato ◽  
Seang-wock Lee ◽  
Toshimitsu Takayanagi ◽  
Hisakazu Suzuki ◽  
Akira Nakamura ◽  
...  
2021 ◽  
Vol 143 (6) ◽  
Author(s):  
Ben Groelke ◽  
John Borek ◽  
Christian Earnhardt ◽  
Chris Vermillion

Abstract This paper presents the design and analysis of a predictive ecological control strategy for a heavy-duty truck that achieves substantial fuel savings while maintaining safe following distances in the presence of traffic. The hallmark of the proposed algorithm is the fusion of a long-horizon economic model predictive controller (MPC) for ecological driving with a command governor (CG) for safe vehicle following. The performance of the proposed control strategy was evaluated in simulation using a proprietary medium-fidelity Simulink model of a heavy-duty truck. Results show that the strategy yields substantial fuel economy improvements over a baseline, the extent of which are heavily dependent on the horizon length of the CG. The best fuel and vehicle-following performance are achieved when the CG horizon has a length of 20–40 s, reducing fuel consumption by 4–6% when compared to a Gipps car-following model.


1994 ◽  
Vol 01 (03n04) ◽  
pp. 367-382 ◽  
Author(s):  
PHILLIP H PHAN ◽  
JOHN E BUTLER ◽  
SOO HOON LEE

The organizational learning dynamics inherent in the franchise relationship provide the primary focus for this research. By encoding knowledge of the skills needed to suceed within the contractual arrangement, the franchisor can short cut the learning process for the franchisee. Once the franchising arrangement is established, both franchisees and franchisors have vested interest in maintaining high levels of organizational learning. In this research a model is presented that incorporates these learning dynamics, and relates them to entrepreneurial returns. Using a sample of heavy-duty truck franchisees, the relationship between different types of organizational learning and performance are explored. The results indicate that the franchising contract may actually act to limit the returns to the franchise relationship. Instead, it may encourage the franchisee to direct their learning efforts to skew returns in their favor. Successful franchisees were found to systematically value the franchise contractual and non-contractual information content more than less successful franchisees.


Author(s):  
V. V. Vantsevich ◽  
A. D. Zakrevskij ◽  
S. V. Kharytonchyk

Inverse dynamics approach has been developed to optimize a highway, heavy-duty truck vehicle dynamics and performance. Using the developed approach, a math model of the multi-body truck system was developed to optimize power distributions to the drive wheels in probabilistic road conditions including macro- and micro-profiles of the road, distributions of the friction coefficient and rolling resistance. The optimization of wheel power distributions was treated as a multi-criterion problem to provide the truck with required energy/fuel efficiency, traction and velocity operational properties, turnability, stability of motion, and handling. Criteria of the listed truck operational properties were organized in a computer algorithm and computer simulations were implemented. Based on optimal combinations of wheel power distributions, an algorithm for integrated control of driveline power dividing units, wheel brakes and fuel feeding was developed.


2021 ◽  
Vol 41 ◽  
pp. 102985
Author(s):  
Beichen Ding ◽  
Benfei Wang ◽  
Ronghui Zhang

Author(s):  
Hao Sun ◽  
Jianlin Wei ◽  
Qingbo Liu ◽  
Dechun Liu ◽  
Yuanze Lin

2020 ◽  
Vol 2020 (0) ◽  
pp. J18107
Author(s):  
Tomoya ICHIHARA ◽  
Taichi SOENO ◽  
Toshiyuki SUGIMACHI ◽  
Toshiaki SAKURAI ◽  
Tetsuo MAKI

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