Results 41 to 50 of about 648,709 (212)

Comparative Analysis of Ejector Refrigeration System Powered with Engine Exhaust Heat using R134a and R245fa

open access: yesEuropean Mechanical Science, 2019
An ejector refrigeration (ER) systemusing exhaust waste heat of a heavy vehicle engine is investigated. A programis developed using engineering equation solver software and it is used to makethe calculations of the system.
Alper Yılmaz, Arif Emre Aktaş
doaj   +1 more source

Research on Height Adjustment Characteristics of Heavy Vehicle Active Air Suspension Based on Fuzzy Control

open access: yesWorld Electric Vehicle Journal, 2023
The suspension system’s performance has a direct impact on the ride comfort, handling stability, and driving safety of heavy vehicles. The active air suspension of heavy vehicles can adjust the stiffness, damping parameters, and body height in real-time ...
Xin Bai   +3 more
doaj   +1 more source

Overview of HLLV effluents in stratosphere and above [PDF]

open access: yes, 1980
The injection of large quantities of rocket exhaust effluent into the upper atmosphere by the heavy lift launch vehicle (HLLV) of the solar power satellite system is discussed. The exhaust products considered are CO, CO2, H2O, H2, and NO.
Brubaker, K. L.
core   +1 more source

Zero-Emission Medium- and Heavy-duty Truck Technology, Markets, and Policy Assessments for California [PDF]

open access: yes, 2020
This report assesses zero emissions medium- and heavy-duty vehicle technologies, their associated costs, projected market share, and possible policy mandates and incentives to support their adoption.
Burke, Andrew, PhD   +1 more
core  

The case for heavier goods vehicles – some new evidence [PDF]

open access: yes, 1982
The Armitage Inquiry found that an increase in maximum gross vehicle weights to 34 tonnes on 4 axles, 38 tonnes on 5 axles and 44 tonnes on 6 axles would permit a reduction in the size of the heavy articulated vehicle fleet of some 13%.
Harding, S.B., Mackie, P.J.
core  

Heavy Vehicles: Distributed Hybrid Power System and Vehicle

open access: yesInternational Journal on Recent and Innovation Trends in Computing and Communication, 2023
This research focuses on the development of a distributed hybrid power system and vehicle for heavy vehicles. The dynamical system comprises a power plant module, a drive module, an energy-storage module, and an entire car controller. The power plant module consists of one or more auxiliary power units that provide power to the heavy vehicle's power ...
openaire   +1 more source

EVALUATION OF APPLIED ROAD TRAFFIC RESTRAINT (CASE STUDY: TEHRAN-QOM ROAD) [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2014
Nowadays, with the increasing growth of vehicles and increasing of  trips and also financial constraints and roads development, transportation network managers eager to follow transportation demand management.
Seyed Mohammad Hosein Dehnad   +2 more
doaj   +1 more source

Environmental effects of SPS: The middle atmosphere [PDF]

open access: yes, 1980
The heavy lift launch vehicle associated with the solar power satellite (SPS) would deposit in the upper atmosphere exhaust and reentry products which could modify the composition of the stratosphere, mesosphere, and lower ionosphere.
Borucki, W. J.   +7 more
core   +1 more source

PREDICTION OF SPEED FLOW IN THE ROAD NETWORK [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2014
The purpose of this study is to provide a model to predict the speed of the traffic flow, in the road network. Using a neural network in which estimated relationship between the flow and traffic parameters including flow rate, volume flow percentage of ...
Mohammad Mohseni   +2 more
doaj   +1 more source

Cooperative look-ahead control for fuel-efficient and safe heavy-duty vehicle platooning [PDF]

open access: yes, 2015
The operation of groups of heavy-duty vehicles (HDVs) at a small inter-vehicular distance (known as platoon) allows to lower the overall aerodynamic drag and, therefore, to reduce fuel consumption and greenhouse gas emissions.
Besselink, Bart   +2 more
core   +2 more sources

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