Heavy Duty Vehicles Research Papers (original) (raw)

The defense industry is rapidly growing in our country. The domestic and national designs of heavy duty vehicles are standardized by many application software programs which are used to model and analyze the plant model and control model. This paper focuses on the modeling of the transmission components of heavy duty vehicles used in the defense industry and the different techniques to standardize them. The paper first introduces the component which is used in heavy duty vehicle transmission modeling. Second, this paper focuses on the modeled PID controller to control the plant model. Third, the conventional controller is defined. Fourth, the analysis of two different controllers and the outputs of this heavy duty component are explained. The requirements for future work are also defined in this paper.

- by and +1
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- Control Systems Engineering, Defense Industry, Heavy Duty Vehicles
- by Anthony Velazquez Abad
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- Business, Hydrogen, Logistics, Energy Policy

Construction equipment emissions in civil engineering are a major sustainability issue. However, the industry continues investing in diesel (and/or biodiesel) machines - which, even if compliant with EU regulations, are far from “clean”. Cleaner technologies in construction equipment, like electrical engines, are considered more expensive investments; moreover, they are dependent on the available power supply while operating in confined areas. So, transitioning these machines sustainably involves changing technologies, business models, and public regulation. In Scandinavia, heavy-duty engines (over 25 tons) have only recently become (limitedly) available. Therefore, the current paper analyzes enablers and barriers for a sustainable transition of civil engineering construction equipment to onsite electrical machines in Scandinavia. The sustainable transition theory, combined with sustainable business models, serves as the framework of understanding. Empirically, a desk study of governance and regulation is combined with material from four fossil-free test building sites in Norway, Denmark, and Sweden. The results highlight the importance of a public-private business model, where public client-driven transition is subsidy-supported (e.g., making electrical equipment available through concession, and encouraging small innovative machine manufacturers to develop electrical equipment), while waiting for international construction equipment players to become transition-ready. Recommendations for the transition thus include strengthening public private collaboration.

In this paper, the influence of lateral load transfers () on the stability of heavy vehicles is analyzed. The  coefficient has been analyzed by several researchers since dif erent lateral load transfer in the vehicle axles, the stability of the vehicle is af ected. This coefficient depends on the stif ness of the chassis and the fifth wheel, which is analyzed through a simulation made in the TruckSim®, a software specialized in vehicle dynamics.

- by IAEME Publication
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- Stability, Heavy Duty Vehicles, Iaeme Ijmet, Lateral Load Transfer

To properly respond to demands to reduce national energy consumption and meet greenhouse gas emission targets based on environment policy, the Ministry of Trade, Industry, and Energy of Korea formed a research consortium consisting of government agencies and academic and research institutions to establish the first fuel efficiency standards for medium-and heavy-duty (MHD) commercial vehicles. The standards are expected to be introduced in 2017 as Phase 1 of the plan and will regulate trucks with a gross vehicle weight in excess of 3.5 tons and buses with a carrying capacity of more than 16 persons. Most MHD commercial vehicles are custom-made and manufactured in diversified small-quantity batch production systems for commercial or public use, resulting in difficulties in utilizing mandatory vehicle tests for fuel efficiency evaluations. Therefore, like Japan, the United States, and the European Union, where the simulation method has been adopted for MHD commercial vehicle fuel efficiency and greenhouse gas emission regulations, Korea has developed a vehicle system model, the Korean Energy Efficiency Simulator (KEES), as an official MHD commercial vehicle fuel efficiency certification tool. In this paper, the development process of the current version of KEES is mainly described. KEES calculates a vehicle's real-time fuel consumption in relevant driving scenarios based on the combination of both backward-and forward-looking modeling approaches by applying vehicle longitudinal dynamics and powertrain specifications. An intuitive graphical user interface has been designed to meet regulatory as well as research purposes for future updates by providing user-friendly operation capability. The model outputs have shown promising results, indicating that KEES will have sufficiently reasonable accuracy and fidelity to be used as an effective method for MHD commercial vehicle fuel efficiency regulations once well-measured and validated modeling inputs are provided. Some of the key issues presented and determined by the consortium in preparing the draft standards are also introduced to suggest the future direction of the legislation.

- by Hoon Lee and +1
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- Mechanical Engineering, Modeling and Simulation, Fuel efficiency, Heavy Duty Vehicles

Driving style, traffic and weather conditions have a significant impact on vehicle fuel consumption and in particular, the road freight traffic significantly contributes to the CO2 increase in atmosphere. This paper proposes an Eco-Route Planner devoted to determine and communicate to the drivers of Heavy-Duty Vehicles (HDVs) the eco-route that guarantees the minimum fuel consumption by respecting the travel time established by the freight companies. The proposed eco-route is the optimal route from origin to destination and includes the optimized speed and gear profiles. To this aim, the Cloud Computing System architecture is composed of two main components: the Data Management System that collects, fuses and integrates the raw external sources data and the Cloud Optimizer that builds the route network, selects the eco-route and determines the optimal speed and gear profiles. Finally, a real case study is discussed by showing the benefit of the proposed Eco-Route planner.

- by IEEE/CAA J. Autom. Sinica
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- Heavy Duty Vehicles, Eco-Route Planner

Elektromobilitet är ett vittfamnande begrepp. Det kan täcka in ett stort antal fordonstyper och tillverkare, en diversifierad tjänstesektor, liksom nya principer för stads- och trafikplanering. Denna rapport är avgränsad till elektrifiering av tunga fordon: bussar och lastbilar. Den inkluderar därmed inte elektrifiering av personbilar (eller elcyklar/elskotrar). Elektrifierade personbilar betra ktas istället som ett angränsande och ibland delvis överlappande system, som framför allt kan användas för jämförelser. Elbilar är förvisso ett dynamiskt område men drivs nästan helt av ett antal stora batteri- och biltillverkare utanför Sverige: både nyaföretag som Tesla Motors och volymtillverkare som GM, Nissan-Renault och BMW. Svenskbaserade biltillverkare deltar med viss framgång – försäljningen av Volvo Cars laddbara premiumhybrid som utvecklades tillsammans med Vattenfallhar överträffat förväntningarna – men svenska företag har små möjligheter att påverka den övergripande teknik- och marknadsutvecklingen. Genom den internationella teknikutvecklingen har kostnaderna för elektrifierade personbilar kraftigt sänkts under senare år, och det finns nu ett stort antal serietillverkade modeller på marknaden. Räckvidd och laddtider är nackdelar för de flesta elbilar, men förbättras kontinuerligt. Standarder har etablerats för infrastruktur, t.ex. snabbladdare, och även här sänks kostnaden fortlöpande.

- by Christian Berggren and +1
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- Urban Transport, Plug In Hybrid Electric Vehicles, Heavy Duty Vehicles