The omnivore wide-range auto-ignition engine: Results to date using 98RON unleaded gasoline and E85 fuels

Dave William Blundell; James Turner; Richard Pearson; Rishin Patel; James Young

doi:10.4271/2010-01-0846

The omnivore wide-range auto-ignition engine: Results to date using 98RON unleaded gasoline and E85 fuels

Dave William Blundell, James Turner, Richard Pearson, Rishin Patel, James Young

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

16 Scopus citations

Abstract

Omnivore is a single cylinder spark ignition based research engine conceived to maximize the operating range of auto-ignition on a variety of fossil and renewable fuels. In order to maximize auto-ignition operation, the two-stroke cycle was adopted with two independent mechanisms for control. The charge trapping valve system is incorporated as a means of varying the quantity of trapped residuals whilst a variable compression ratio mechanism is included to give independent control over the end of compression temperature. The inclusion of these two technologies allows the benefits of trapped residual gas to be maximised (to minimize NOx formation) whilst permitting variation of the onset of auto-ignition. 2000rpm and idle are the main focus of concern whilst also observing the influence of injector location. This paper describes the rational behind the engine concept and presents the results achieved at the time of writing using 98ulg and E85 fuels. Copyright © 2010 Lotus Cars Ltd.

Original language	English (US)
Title of host publication	SAE Technical Papers
Publisher	SAE International
DOIs	https://doi.org/10.4271/2010-01-0846
State	Published - Jan 1 2010
Externally published	Yes

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title = "The omnivore wide-range auto-ignition engine: Results to date using 98RON unleaded gasoline and E85 fuels",

abstract = "Omnivore is a single cylinder spark ignition based research engine conceived to maximize the operating range of auto-ignition on a variety of fossil and renewable fuels. In order to maximize auto-ignition operation, the two-stroke cycle was adopted with two independent mechanisms for control. The charge trapping valve system is incorporated as a means of varying the quantity of trapped residuals whilst a variable compression ratio mechanism is included to give independent control over the end of compression temperature. The inclusion of these two technologies allows the benefits of trapped residual gas to be maximised (to minimize NOx formation) whilst permitting variation of the onset of auto-ignition. 2000rpm and idle are the main focus of concern whilst also observing the influence of injector location. This paper describes the rational behind the engine concept and presents the results achieved at the time of writing using 98ulg and E85 fuels. Copyright {\textcopyright} 2010 Lotus Cars Ltd.",

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AU - Pearson, Richard

AU - Patel, Rishin

AU - Young, James

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N2 - Omnivore is a single cylinder spark ignition based research engine conceived to maximize the operating range of auto-ignition on a variety of fossil and renewable fuels. In order to maximize auto-ignition operation, the two-stroke cycle was adopted with two independent mechanisms for control. The charge trapping valve system is incorporated as a means of varying the quantity of trapped residuals whilst a variable compression ratio mechanism is included to give independent control over the end of compression temperature. The inclusion of these two technologies allows the benefits of trapped residual gas to be maximised (to minimize NOx formation) whilst permitting variation of the onset of auto-ignition. 2000rpm and idle are the main focus of concern whilst also observing the influence of injector location. This paper describes the rational behind the engine concept and presents the results achieved at the time of writing using 98ulg and E85 fuels. Copyright © 2010 Lotus Cars Ltd.

AB - Omnivore is a single cylinder spark ignition based research engine conceived to maximize the operating range of auto-ignition on a variety of fossil and renewable fuels. In order to maximize auto-ignition operation, the two-stroke cycle was adopted with two independent mechanisms for control. The charge trapping valve system is incorporated as a means of varying the quantity of trapped residuals whilst a variable compression ratio mechanism is included to give independent control over the end of compression temperature. The inclusion of these two technologies allows the benefits of trapped residual gas to be maximised (to minimize NOx formation) whilst permitting variation of the onset of auto-ignition. 2000rpm and idle are the main focus of concern whilst also observing the influence of injector location. This paper describes the rational behind the engine concept and presents the results achieved at the time of writing using 98ulg and E85 fuels. Copyright © 2010 Lotus Cars Ltd.

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M3 - Conference contribution

BT - SAE Technical Papers

PB - SAE International

ER -

The omnivore wide-range auto-ignition engine: Results to date using 98RON unleaded gasoline and E85 fuels

Abstract

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