Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine

An experimental study is carried out for investigating the possibility to limit knock occurrence on a SI engine by proper engine thermal management. The control of the wall temperature is realized by means of an electrically driven water pump. The coolant flow rate can be varied regardless of the en...

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Autor principal:	Falbo Luigi
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/a9cb4902574d40389c5ed592d79d82eb
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spelling	oai:doaj.org-article:a9cb4902574d40389c5ed592d79d82eb2021-11-08T15:18:51ZEvaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine2267-124210.1051/e3sconf/202131207008https://doaj.org/article/a9cb4902574d40389c5ed592d79d82eb2021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/88/e3sconf_ati2021_07008.pdfhttps://doaj.org/toc/2267-1242An experimental study is carried out for investigating the possibility to limit knock occurrence on a SI engine by proper engine thermal management. The control of the wall temperature is realized by means of an electrically driven water pump. The coolant flow rate can be varied regardless of the engine speed. Preliminarily, an experimental campaign aimed at evaluating the effects of the coolant flow rate on the in-cylinder pressure fluctuations, under steady state engine operation, namely WOT@1500 rpm, is presented. In the experiments, the spark advance and the equivalence ratio are controlled by the ECU according to the production engine map and the coolant flow rate is varied from 1500 up to 4500 dm3/h. In a subsequent set of tests, a variation on spark advance is operated and, for each value of the spark advance, different coolant flow rates are enforced with the aim of evaluating the possibility to increase the spark advance as close as possible to the maximum brake torque condition and of mitigating knock occurrence with increased coolant flow rates. The benefits in terms of fuel economy and increase engine performance, in comparison to the traditional approaches for knock mitigation, are evaluated.Falbo LuigiEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 312, p 07008 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Falbo Luigi Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine
description	An experimental study is carried out for investigating the possibility to limit knock occurrence on a SI engine by proper engine thermal management. The control of the wall temperature is realized by means of an electrically driven water pump. The coolant flow rate can be varied regardless of the engine speed. Preliminarily, an experimental campaign aimed at evaluating the effects of the coolant flow rate on the in-cylinder pressure fluctuations, under steady state engine operation, namely WOT@1500 rpm, is presented. In the experiments, the spark advance and the equivalence ratio are controlled by the ECU according to the production engine map and the coolant flow rate is varied from 1500 up to 4500 dm3/h. In a subsequent set of tests, a variation on spark advance is operated and, for each value of the spark advance, different coolant flow rates are enforced with the aim of evaluating the possibility to increase the spark advance as close as possible to the maximum brake torque condition and of mitigating knock occurrence with increased coolant flow rates. The benefits in terms of fuel economy and increase engine performance, in comparison to the traditional approaches for knock mitigation, are evaluated.
format	article
author	Falbo Luigi
author_facet	Falbo Luigi
author_sort	Falbo Luigi
title	Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine
title_short	Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine
title_full	Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine
title_fullStr	Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine
title_full_unstemmed	Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine
title_sort	evaluation of a novel strategy, based in coolant flow rate control, for avoiding knock in a si engine
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/a9cb4902574d40389c5ed592d79d82eb
work_keys_str_mv	AT falboluigi evaluationofanovelstrategybasedincoolantflowratecontrolforavoidingknockinasiengine
_version_	1718441979095810048

Evaluation of a novel strategy, based in Coolant Flow Rate Control, for avoiding Knock in a SI engine

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