The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine
A physics based, lumped thermal capacity model of a 1litre, 3 cylinder, turbocharged, directly injected spark ignition engine has been developed to investigate the effects of cylinder deactivation on the thermal behaviour and fuel economy of small capacity, 3 cylinder engines. When one is deactivate...
| Main Authors: | , , |
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| Format: | Article |
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SAE International
2016
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| Online Access: | https://eprints.nottingham.ac.uk/40940/ |
| _version_ | 1848796167497842688 |
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| author | Bech, Alexander Shayler, Paul J. McGhee, Michael |
| author_facet | Bech, Alexander Shayler, Paul J. McGhee, Michael |
| author_sort | Bech, Alexander |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | A physics based, lumped thermal capacity model of a 1litre, 3 cylinder, turbocharged, directly injected spark ignition engine has been developed to investigate the effects of cylinder deactivation on the thermal behaviour and fuel economy of small capacity, 3 cylinder engines. When one is deactivated, the output of the two firing cylinders is increased by 50%. The largest temperature differences resulting from this are between exhaust ports and between the upper parts of liners of the deactivated cylinder and the adjacent firing cylinder. These differences increase with load. The deactivated cylinder liner cools to near-coolant temperature. Temperatures in the lower engine structure show little response to deactivation. Temperature response times following deactivation or reactivation events are similar. Motoring work for the deactivated cylinder is a minor loss; the net benefit of deactivation diminishes with increasing load. For the NEDC and FTP-75 cycle, the predicted fuel savings are ∼3½ %; the benefit is lower for more transient or highly loaded cycles. |
| first_indexed | 2025-11-14T19:43:41Z |
| format | Article |
| id | nottingham-40940 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:43:41Z |
| publishDate | 2016 |
| publisher | SAE International |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-409402020-05-04T18:16:43Z https://eprints.nottingham.ac.uk/40940/ The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine Bech, Alexander Shayler, Paul J. McGhee, Michael A physics based, lumped thermal capacity model of a 1litre, 3 cylinder, turbocharged, directly injected spark ignition engine has been developed to investigate the effects of cylinder deactivation on the thermal behaviour and fuel economy of small capacity, 3 cylinder engines. When one is deactivated, the output of the two firing cylinders is increased by 50%. The largest temperature differences resulting from this are between exhaust ports and between the upper parts of liners of the deactivated cylinder and the adjacent firing cylinder. These differences increase with load. The deactivated cylinder liner cools to near-coolant temperature. Temperatures in the lower engine structure show little response to deactivation. Temperature response times following deactivation or reactivation events are similar. Motoring work for the deactivated cylinder is a minor loss; the net benefit of deactivation diminishes with increasing load. For the NEDC and FTP-75 cycle, the predicted fuel savings are ∼3½ %; the benefit is lower for more transient or highly loaded cycles. SAE International 2016-10-17 Article PeerReviewed Bech, Alexander, Shayler, Paul J. and McGhee, Michael (2016) The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine. SAE International Journal of Engines, 9 (4). ISSN 1946-3944 http://papers.sae.org/2016-01-2160/ doi:10.4271/2016-01-2160 doi:10.4271/2016-01-2160 |
| spellingShingle | Bech, Alexander Shayler, Paul J. McGhee, Michael The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine |
| title | The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine |
| title_full | The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine |
| title_fullStr | The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine |
| title_full_unstemmed | The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine |
| title_short | The effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine |
| title_sort | effects of cylinder deactivation on the thermal behaviour and performance of a three cylinder spark ignition engine |
| url | https://eprints.nottingham.ac.uk/40940/ https://eprints.nottingham.ac.uk/40940/ https://eprints.nottingham.ac.uk/40940/ |