The SAE MOBILUS platform will continue to be accessible and populated with high quality technical content during the coronavirus (COVID-19) pandemic. x

Your Selections

Hybrid power
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Investigation on the Dynamic Behaviour of a Torque Transmission Chain for an Innovative Hybrid Power Unit Architecture

Università degli Studi di Modena-Valerio Mangeruga, Matteo Giacopini, Saverio Barbieri, Michele Russo
  • Technical Paper
  • 2020-37-0013
To be published on 2020-06-23 by SAE International in United States
In this contribution, the mechanical torque transmission between the Elecrtic Motor (EM) and the Internal Combustion Engine (ICE) of a P0 architecture hybrid power unit is analysed. In particular, the system is made up of a brand new, single-cylinder 480cc engine developed on the basis of the Ducati "959 Superquadro" V90 2-cylinders engine. The thermal engine is assisted by a custom electric motor (30 kW), powered by a Li-Ion battery pack. The Ducati "959 Superquadro" engine is chosen because of its high power-to-weight ratio, and for taking advantage of its V90 2-cylinders layout. In fact, the vertical engine head is removed and it is replaced by the electric motor directly engaged to the crankshaft using the original valvetrain transmission chain, thus achieving a very compact package. This solution could be suitable for many V-type engines and aims to obtain a small hybrid power unit for possible motorcycle/small vehicle applications. The original timing chain object of this study is a silent chain, which is commonly employed as a transmission component in hybrid power unit because it…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Energy Management of Dual Energy Source of Hydrogen Fuel Cell Hybrid Electric Vehicles

China FAW Group Co.,Ltd.-Haoyuan Song, Yuanzhi Liu, Zhao Yu
Jilin University Automotive Engineering College-Yongqiang Zhao
  • Technical Paper
  • 2020-01-0595
To be published on 2020-04-14 by SAE International in United States
With the growing shortage of oil resources and the increasingly strict environmental regulations, countries are vigorously developing new energy vehicles, and as a truly zero-emission vehicle in the application, fuel cell electric vehicles can not only completely replace gasoline cars in term of fuel, but also have the advantages of high energy conversion efficiency, short hydrogenation time and long driving range. For Fuel Cell Hybrid Electric Vehicle (FCEV), and the Energy Management Control Strategy is the "core" of the whole vehicle control system, which has a direct and significant effect on the power and economy of the vehicle. In this paper, the "dual energy source system" composed of fuel cell and power battery is taken as the research object. Based on the proposed power system structure, a fuel cell hybrid power management control strategy is designed, and the simulation model based on Matlab/Simulink and real vehicle are adopted to perform performance verification on standard operating conditions. The strategy aims at optimizing the power and economy, sets the target control value of the SOC, coordinates the…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Design of a Flexible Hybrid Powertrain Using a 48 V-Battery and a Supercapacitor for Ultra-Light Urban Vehicles

IFP School-Ouafae El Ganaoui-Mourlan, El Hadj Miliani, Daniel Carlos Da Silva, Matthieu Couillandeau, Charlie Gonod, Guillaume Miller
  • Technical Paper
  • 2020-01-0445
To be published on 2020-04-14 by SAE International in United States
Global warming has put the transport sector, a major contributor of CO2 emissions, under high pressure to improve efficiency. In this context, ultra-light vehicles weighting less than 500 kg, as well as hybrid powertrains, are nowadays seen as promising development trends. The design process of the powertrain of a vehicle combining the advantages of the two concepts is presented in this paper. Through a performance study based on a simple MATLAB model, and mathematical simulation, a proposal is made. A powertrain using a battery and supercapacitor 48V dual power source network, two electric motors and clutches to switch between conventional, parallel, series and full electric modes proves to be an interesting system in terms of performance and costs. A simulation study conducted on a scenario with different outcome possibilities showed that high modularity of the system allows to achieve fuel efficiencies equivalent to approximately 3 l/100 km on the Artemis cycle. Finally, integration, packaging and cost are considered and some hints for further powertrain efficiency improvements are presented.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Q&A

Automotive Engineering: November/December 2019

  • Magazine Article
  • 19AUTP11_17
Published 2019-11-01 by SAE International in United States

Valeo is an industry leader in technologies essential to vehicle electrification and connected/automated driving. The French Tier 1 pioneered 48V mild-hybrid systems and is a major producer of e-hardware and software including belt-starter generators, power electronics, electric superchargers and traction motors. Valeo recently entered a collaboration with Dana Inc. to develop and supply electrified AWD systems featuring 48-V hybrid power. The first of these is scheduled to launch in volume in early 2020 with a major European OEM.

Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

A New Parallel Hybrid Concept for Microcars: Propulsion System Design, Modeling and Control

ENEA-Fernando Ortenzi
Positech Consulting s.r.l.-Erminio Maria Ursitti
Published 2019-10-07 by SAE International in United States
Technological and commercial development of vehicles specifically conceived for urban use would certainly be a crucial aspect in making mobility sustainable in urban contexts thanks to their limited in size and low fuel consumption and emissions. Hybrid drive trains are particularly suited to this purpose: if properly designed, very small-sized thermal engines can give all the energy and power required for the application, also making pure electric driving possible when required. The authors are involved since a decade in proposing new low-cost solutions to address this market sector. Market itself explored these possibilities and nowadays offers some BEV solutions in this market share, but it is still lacking in proposing solutions for a parallel full hybrid drive. The main reason must be searched in the complexity of normally applied parallel-hybrid propulsion systems which is not compatible with the limited costs of the application.Taking the lead from these considerations, the authors here propose a simple concept for a parallel-hybrid kit for quadricycles called Hybrid Power Pack (HPP) which is now installed and under long-range testing on…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Design of a Hybrid Power Unit for Formula SAE Application: Packaging Optimization and Thermomechanical Design of the Electric Motor Case

University of Modena and Reggio Emilia-Valerio Mangeruga, Matteo Giacopini, Saverio Giulio Barbieri, Fabio Berni, Enrico Mattarelli, Carlo Rinaldini
Published 2019-09-09 by SAE International in United States
This paper presents the development of a parallel hybrid power unit for Formula SAE application. In particular, the system is made up of a brand new, single-cylinder 480 cc internal combustion engine developed on the basis of the Ducati “959 Superquadro” V90 2-cylinders engine. The thermal engine is assisted by a custom electric motor (30 kW), powered by a Li-Ion battery pack. The performance of the ICE has been optimized through CFD-1D simulation (a review of this activity is reported in a parallel paper). The main design goal is to get the maximum amount of mechanical energy from the fuel, considering the car typical usage: racing on a windy track. The Ducati “959 Superquadro” engine is chosen because of its high power-to-weight ratio, as well as for its V90 2-cylinder layout. In fact, the vertical engine head is removed and it is subsequently replaced by the electric motor directly engaged to the crankshaft using the original valvetrain transmission chain, thus achieving a very compact package. The mechanical behaviour of the original chain is investigated for…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Development of a Hybrid Power Unit for Formula SAE Application: ICE CFD-1D Optimization and Vehicle Lap Simulation

UNIMORE-Enrico Mattarelli, Carlo Alberto Rinaldini, Francesco Scrignoli, Valerio Mangeruga
Published 2019-09-09 by SAE International in United States
The paper reviews the CFD optimization of a motorcycle engine, modified for the development of a hybrid powertrain of a Formula SAE car. In a parallel paper, the choice of the donor engine (Ducati 959 Panigale: 2-cylinder, V90, 955 cc, peak power 150 HP at 10500 rpm, peak torque 102 Nm at 9000 rpm) is thoroughly discussed, along with all the hardware modifications oriented to minimize the new powertrain dimensions, weight and cost, and guarantee full reliability in racing conditions. In the current paper, the attention is focused on two main topics: 1) CFD-1D tuning of the modified Internal Combustion Engine (ICE), in order to comply with the Formula SAE regulations, as well as to maximize the power output; 2) simulation of the vehicle in racing conditions, comparison with a conventional combustion car and a full electric vehicle. The stock engine has been strongly modified, since the head of the vertical cylinder has been replaced by the electric motor, and the intake system of the other cylinder now includes a 20 mm restrictor. Despite these…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Preventing Ice Buildup on Electric Aircraft

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_04
Published 2019-08-01 by SAE International in United States

Fuel economy is one of the biggest challenges facing the aviation industry. To overcome these challenges, researchers are working on next generation aviation systems. Next generation aircraft will be either hybrid power, or all-electric power, which would help with fuel consumption. But electric aircraft present challenges in other areas such as the prevention of ice formation. Ice formation on aircraft can degrade the aerodynamic performance significantly by reducing lift while increasing drag. Tech Briefs Media Group (TBMG) editor, Billy Hurley, interviewed researcher Afaq Ahmed Abbasi of Northwestern Polytechnical University's Department of Fluid Mechanics to learn more about these challenges.

Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

EDITORIAL: Diesel's doing just fine, thank you

SAE Truck & Off-Highway Engineering: June 2019

Editor-in-Chief-Ryan Gehm
  • Magazine Article
  • 19TOFHP06_08
Published 2019-06-01 by SAE International in United States

Alternative propulsion features prominently in this issue, starting from the cover shot of Nikola's sleek fuel-cell electric Class 8 tractor, the Two, and continuing into the annual Executive Viewpoints series of articles, in which experts discuss the challenges and opportunities in a range of technology areas, including biomethane and hybrid power systems.

Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Conceptual Design and Analysis of Hybrid Torque-Vectoring Differential (H-TD)

Industrial Technology Research Institute-Yun-Jui Chung
National Taiwan University-Cheng-Kai Lin, Po-Jen Cheng, Tyng Liu
Published 2019-04-02 by SAE International in United States
This study proposes a motor-controlled torque-vectoring differential equipped with electric hybrid functionality, hereinafter referred to as H-TD (Hybrid Torque-vectoring Differential). The mechanism of H-TD consists of an open differential, a planetary gearset, an electric motor, a clutch brake, and a clutch. The main difference between H-TD and preciously published TVD (Torque Vectoring Differential) systems is that it uses the electric motor to be able to not only distribute torque between output shafts, but also provide additional hybrid power. Hence, H-TD provides the possibility to integrate multiple functions into a single system. Furthermore, H-TD can be utilized in both hybrid electric vehicles and electric ones. Firstly, the constitution of H-TD mechanism is introduced, and three operation modes of the system, control strategy, as well as the dynamic models for the system are presented. Secondly, after considering the possible design requirements and the possible powertrain configurations of H-TD on four-wheeled vehicles, a set of feasible design parameters of the system is given. After completing the conceptual design of H-TD, this study uses a numerical simulation program prepared…
This content contains downloadable datasets
Annotation ability available