A MODELING STUDY ON FUEL CONSUMPTION IMPROVEMENT OF A LIGHT-DUTY CNG TRUCK EQUIPPED WITH A HYBRID POWERTRAIN

Ratnak Sok*, Jin Kusaka, Hisaharu Nakashima, Makoto Akaike

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Increasing driving ranges of compressed natural gas (CNG) trucks is one solution to promote an alternative and green fuel. One major issue is that the trucks have short-driving ranges because the gas contains low physical density. However, due to a high hydrogen-to-carbon ratio in the gas, the CNG trucks emit cleaner emissions than gasoline/diesel-powered vehicles. To increase the driving range, a basic simulation study is performed on the effect of engine technologies on the fuel consumption of the concept CNG truck equipped with a parallel hybrid powertrain. The parallel hybrid light-duty delivery truck equipped with a production-typed engine is modeled using commercial software. Engine map data are taken from a modified spark-ignition engine with a compression ratio of 17 operated under variable valve timings (WT) and are used as inputs into the vehicle model. The effects of the WT engine on fuel consumption reduction are discussed. The results show that the average fuel consumption of the CNG truck equipped with the hybrid powertrain is improved by 15% relative to baseline data of the conventional powertrain under the JE05 driving cycle using a small-size hybridization.

Original languageEnglish
Title of host publication5th-6th Thermal and Fluids Engineering Conference, TFEC 2021
PublisherBegell House Inc
Pages1369-1376
Number of pages8
ISBN (Electronic)9781567005172
DOIs
Publication statusPublished - 2021
Event5th-6th Thermal and Fluids Engineering Conference, TFEC 2021 - Virtual, Online
Duration: 2021 May 262021 May 28

Publication series

NameProceedings of the Thermal and Fluids Engineering Summer Conference
Volume2021-May
ISSN (Electronic)2379-1748

Conference

Conference5th-6th Thermal and Fluids Engineering Conference, TFEC 2021
CityVirtual, Online
Period21/5/2621/5/28

Keywords

  • CNG engine
  • Parallel hybrid truck
  • WT
  • fuel consumption

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Electrical and Electronic Engineering

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