Turbocharging of high performance compressed natural gas SI engine for light duty vehicle

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F18%3A00330428" target="_blank" >RIV/68407700:21220/18:00330428 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Turbocharging of high performance compressed natural gas SI engine for light duty vehicle

Original language description

Natural gas as an automotive fuel has many benefits in comparison with traditional fossil fuels. Favorable anti-knock properties of methane allow us to utilize higher boost levels and the engine power than that of gasoline engines. High level of intake boosting male possible to achieve loads, comparable to the state of the art diesel engines without soot and PM emission. Stoichiometric operation within the full range of the complete engine map enables the use a relatively simple exhaust gas aftertreatment, based on a three way catalyst. The paper describes a chosen 1-D thermodynamic modelling studies, calibrated and validated by experimental data. The investigations were performed on a spark ignition, direct injection, four cylinder engine with 1.6 l displacement. The engine was optimized for mono fuel operation with compressed natural gas. Due to complexity of gaseous fuel infrastructure in vehicles, compared to the traditional fuels, it is desirable to keep the turbocharging system as simple as possible. Traditional variable geometry turbine systems were tested. Practical design constraints as peak cylinder pressure, turbine inlet temperature, compressor outlet temperature and others were met. Various strategies on how to achieve high load at low engine speed were investigated. The authors propose a single stage turbocharger to cover the demand for a high torque at low engine speed and high power at full speed, with boost levels comparable to a dual stage turbocharging. It was concluded that the single stage turbocharging enables the engine to operate with maximum BMEP of 3 MPa between 1500 and 2750 rpm. Maximum engine speed had to be limited to a similar value that is usually applied in a diesel engine due to limited control range of turbocharging.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

MECCA Journal of Middle European Construction and Design of Cars

ISSN

1214-0821

e-ISSN

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Volume of the periodical

2018

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

10

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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