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Research on Fast Filling Strategy of Large Capacity On-Board Hydrogen Storage Tank for Highway Passenger Cars

Tongji University-Xian Wu, Jitian Liu, Guoming Deng, Jianwang Shao
  • Technical Paper
  • 2020-01-0855
To be published on 2020-04-14 by SAE International in United States
In order to study the fast filling problem of large-capacity on-board hydrogen storage tank for highway passenger cars, a computational fluid dynamics (CFD) simulation model of 134L large-capacity hydrogen storage tank was established. By simulating different pre-cooling temperatures and mass flow rates, the temperature distribution and thermal transmission in the tank were observed. Due to the large ratio of length to diameter of the hydrogen tank, the temperature distribution is extremely uneven during the whole filling process, and the high temperature area is mainly concentrated in the tank tail. And the heat transfer between the gas and the tank wall is not obvious under the low and constant mass flow rate. The temperature rise process during the whole filling process under different mass flow conditions was simulated to satisfy the highest safe temperature limit. A time-delayed filling strategy based on the control of mass flow rate and a suitable multi-stage filling strategy based on the hydrogen supply status of the actual hydrogen refueling station are respectively proposed. That will be helpful to provide the theoretical…
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Development of Hydrogen Powered Fuel Cell e-Snowmobiles

BRP-Rotax GmbH & Co KG-Walter Hinterberger, Nigel Foxhall
HyCentA Research GmbH-Patrick Pertl, Martin Aggarwal, Alexander Trattner
  • Technical Paper
  • 2019-32-0555
Published 2020-01-24 by Society of Automotive Engineers of Japan in Japan
In the highly innovative and holistic flagship project HySnow (Decarbonisation of Winter Tourism by Hydrogen Powered Fuel Cell Snowmobiles), funded by the Austrian Climate and Energy Fund, the decarbonization of winter tourism is being demonstrated. Within this project, two prototype e-snowmobiles have been developed including the adaption of a Polymer Electrolyte Membrane Fuel Cell (PEM-FC) system for the low temperature and high-performance targets and the integration of the drivetrain into the vehicle.In this paper the drivetrain development process of the prototype e-snowmobiles will be presented with the aim to derive specifications for the drivetrain components as PEM-FC system, hydrogen storage system, electric drive, battery and power electronics. Based on typical use cases for snowmobiles overall vehicle specifications and requirements are defined. Associated driving cycles are investigated and used as input for the development process. Subsequently, analyses regarding possible drivetrain topologies based on technical and economical vehicle requirements are carried out. In parallel, vehicle implementation concepts based on standardized development processes are performed. The development and the design process are verified by verification and optimization loops.The…
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Hydrogen Surface Vehicle to Station Communications Hardware and Software

Fuel Cell Standards Committee
  • Ground Vehicle Standard
  • J2799_201912
  • Current
Published 2019-12-13 by SAE International in United States
This standard specifies the communications hardware and software requirements for fueling hydrogen surface vehicles (HSV), such as fuel cell vehicles, but may also be used where appropriate, with heavy-duty vehicles (e.g., busses) and industrial trucks (e.g., forklifts) with compressed hydrogen storage. It contains a description of the communications hardware and communications protocol that may be used to refuel the HSV. The intent of this standard is to enable harmonized development and implementation of the hydrogen fueling interfaces. This standard is intended to be used in conjunction with the hydrogen fueling protocols in SAE J2601 and nozzles and receptacles conforming with SAE J2600.
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Toyota unveils rear-drive FCEV Mirai, plug-in RAV4

Automotive Engineering: November/December 2019

Paul Seredynski
  • Magazine Article
  • 19AUTP11_15
Published 2019-11-01 by SAE International in United States

As part of an electrified stable primed for the 2019 Los Angeles Auto Show (LAAS), Toyota will display its all-new Mirai fuel-cell electric vehicle (FCEV) and the upcoming plug-in hybrid version of its RAV4 compact SUV. The two 2021 models will further pad the Japanese company's already market-leading six hybrid offerings (12 if the premium Lexus brand is included). On top of previously announced plans for a “major battery electric vehicle (BEV) rollout,” Toyota also announced an extension of its hybrid battery warranties.

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Development of Hardware and Software for On-Board Hydrogen System

SAE International Journal of Advances and Current Practices in Mobility

Tongji University-Wenya Jia, Tiancai Ma, Chuan Ye
  • Journal Article
  • 2019-01-0377
Published 2019-04-02 by SAE International in United States
The fuel cell engine is considered to be the ultimate technical direction for the development of vehicle power. The on-board hydrogen supply system is important in fuel cell system. However, the on-board hydrogen supply system is diversified, and the management is mostly integrated in the engine controller. Thus, the fuel cell engine controller is excessive coupled with design of on-board hydrogen supply system. In order to improve the portability and compatibility of the fuel cell engine controller, an independent controller of the on-board hydrogen supply system is designed. Meanwhile, the hardware and software are developed to control 35Mpa gaseous hydrogen storage system. After being tested in a high-pressure environment, the controller can detect temperature, pressure and ambient hydrogen concentration of the hydrogen supply system. Simultaneously, it can drive and control the hydrogen cylinder valve. Besides, the controller can communicate with the Campus Area Network (CAN) bus of the fuel cell engine through the CANPro protocol analysis platform software. It is verified that the infrared signal waveform emitted by the infrared transmitting module complies with the…
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A Dual Fuel Hydrogen - Diesel Compression Ignition Engine and Its Potential Application in Road Transport

Czech Technical University in Prague-Jiri Vavra, Ivan Bortel, Michal Takats
Published 2019-04-02 by SAE International in United States
In this paper investigations of hydrogen use as a main fuel for a compression ignition engine with pilot injection of diesel fuel will be presented. The experiments were performed in steady state conditions on a single cylinder research compression ignition engine with a bore of 85 mm and piston stroke of 90 mm, coupled with an electric dynamometer. The diesel engine with optimized compression ratio was equipped with a diesel fuel direct injection common rail system. A homogeneous mixture of air and hydrogen was formed using a port fuel injection. The influence of hydrogen share on total fuel energy was systematically investigated between limits given by the pure diesel operation and up to a maximum hydrogen share, reaching 98% by energy. The tested hydrogen share was constrained by practical limits at various loads between 4 and 16 bar of IMEP with simulation of the real turbocharger performance and at three engine speeds. It was observed that increase in the hydrogen share reduces emissions of CO2 and CO proportionally with decrease in carbon content in the…
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Development of Hydrogen Fuel Cell Bus Technology for Urban Transport in India

Tata Motors Ltd.-Yogesha S A, Smitan Brahmbhatt, Munusamy Raja, Suresh Arikapudi, Bhaveshkumar Bhut, Jaikumar V
Published 2019-01-09 by SAE International in United States
Polymer Electrolyte Membrane Fuel Cell (PEMFC) technology is considered for automotive applications due to rapid start up, energy efficiency, high power density and less maintenance. In line with National Hydrogen Energy Roadmap of Govt. of India that aims to develop and demonstrate hydrogen powered IC engine and fuel cell based vehicle. TATA Motors Ltd. has designed, developed and successfully demonstrated “Low Floor Hydrogen Fuel Cell Bus” which comprises of integrated fuel cell power system, hydrogen storage and dispensing system.The fuel cell power system, converts the stored chemical energy in the hydrogen to DC electrical energy. The power generated is regulated and used for powering the traction motor. The development of fuel cell bus consists of five stages: Powertrain sizing as per vehicle performance targets, fuel cell stack selection and balance of plant design and development, bus integration, hydrogen refueling infrastructure creation and testing of fuel cell bus. Fuel cell stack integrated with balance of components, which includes air subsystem, hydrogen subsystem, and thermal management system and water recovery unit. Integrated fuel cell power system tested…
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Standard for Fuel Systems in Fuel Cell and Other Hydrogen Vehicles

Fuel Cell Standards Committee
  • Ground Vehicle Standard
  • J2579_201806
  • Current
Published 2018-06-15 by SAE International in United States
The purpose of this document is to define design, construction, operational, and maintenance requirements for hydrogen fuel storage and handling systems in on-road vehicles. Performance-based requirements for verification of design prototype and production hydrogen storage and handling systems are also defined in this document. Complementary test protocols (for use in type approval or self-certification) to qualify designs (and/or production) as meeting the specified performance requirements are described. Crashworthiness of hydrogen storage and handling systems is beyond the scope of this document. SAE J2578 includes requirements relating to crashworthiness and vehicle integration for fuel cell vehicles. It defines recommended practices related to the integration of hydrogen storage and handling systems, fuel cell system, and electrical systems into the overall Fuel Cell Vehicle.
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Paccar reveals new and future tech at CES 2018

SAE Truck & Off-Highway Engineering: February 2018

Bill Visnic
  • Magazine Article
  • 18TOFHP02_08
Published 2018-02-01 by SAE International in United States

Although 2018 marked its first-ever presence at the enormously influential Consumer Electronics Show (CES), Paccar made sure it fit right in with the show's technology- and transportation-sector veterans by unveiling a pair of big-rig demonstrators that show the way the multi-faceted OEM plans to address expanding interest in autonomous driving and more environmentally-conscious operations.

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CLARITY OF PURPOSE

Automotive Engineering: April 2017

Bill Visnic
  • Magazine Article
  • 17AUTP04_02
Published 2017-04-01 by SAE International in United States

With the 2017 Clarity Fuel Cell, Honda gets serious about fuel-cell power and a hydrogen infrastructure.

We expected some pop and sizzle-at least something vaguely adventurous-to mark the occasion of refueling Honda's all-new 2017 Clarity Fuel Cell sedan with compressed hydrogen pumped in at a heady 10,153 psi (700 bar).

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