Improvement of Fuel Consumption for SI Engines by Combining with Glow Plug Heated Sub-Chamber and Lean Burn

Minimization of the carbon dioxide and harmful pollutants emissions and maximization of fuel economy for the lean-burn spark ignition (SI) engines significantly rely on precise air-fuel ratio (AFR) control. However, the main challenge of AFR control is the large time-varying delay which exists in lean-burn engines. Since the system is usually subject to external disturbances and uncertainties, a high level of robustness in the AFR control design has to be considered. Herein, a fuzzy sliding-mode control (FSMC) technique is proposed to track the desired AFR in the presence of periodic disturbances. The proposed method is model free and does not need any system characteristics. Based on the fuzzy system input-output data, two scaling factors are first employed to normalize the sliding surface and its derivative. According to the concept of the if-then rule, an appropriate rule table for the logic system is designed. Finally, the feasibility and effectiveness of the proposed control scheme are evaluated under various operating conditions.

Download Full-text

Ethanol in gasoline fuel blends: Effect on fuel consumption and engine out emissions of SI engines in cold operating conditions

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2017.11.090 ◽

2018 ◽

Vol 130 ◽

pp. 1081-1089 ◽

Cited By ~ 53

Author(s):

Paolo Iodice ◽

Giuseppe Langella ◽

Amedeo Amoresano

Keyword(s):

Fuel Consumption ◽

Operating Conditions ◽

Fuel Blends ◽

Si Engines

Download Full-text

Second-Order Sliding Mode Strategy for Air–Fuel Ratio Control of Lean-Burn SI Engines

IEEE Transactions on Control Systems Technology ◽

10.1109/tcst.2013.2281437 ◽

2014 ◽

Vol 22 (4) ◽

pp. 1374-1384 ◽

Cited By ~ 21

Keyword(s):

Sliding Mode ◽

Second Order ◽

Lean Burn ◽

Fuel Ratio ◽

Si Engines ◽

Second Order Sliding Mode

Download Full-text

The Impact of Inlet Valve Deposits on PFI Gasoline SI Engines – Quantified Effects on Fuel Consumption

10.4271/2007-01-0004 ◽

2007 ◽

Cited By ~ 5

Author(s):

R. J. Price ◽

D. P. Martin ◽

N. Dickens ◽

P. Bohr

Keyword(s):

Fuel Consumption ◽

Inlet Valve ◽

Si Engines ◽

The Impact

Download Full-text

λDSF: Dynamic Skip Fire with Homogeneous Lean Burn for Improved Fuel Consumption, Emissions and Drivability

10.4271/2018-01-0891 ◽

2018 ◽

Cited By ~ 4

Author(s):

Elliott Ortiz-Soto ◽

Robert Wang ◽

Masaki Nagashima ◽

Matthew Younkins ◽

Andreas Müller ◽

...

Keyword(s):

Fuel Consumption ◽

Lean Burn

Download Full-text

Emission Reduction in SI Engines by using metal doped Cu- ZSM5 and Ce.Cu- ZSM5 zeolite as Catalysts

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.h6993.078919 ◽

2019 ◽

Vol 8 (9) ◽

pp. 1423-1427 ◽

Cited By ~ 1

Keyword(s):

Emission Reduction ◽

Catalytic Converter ◽

Nox Reduction ◽

Spark Ignition Engine ◽

Exhaust Emission ◽

Lean Burn ◽

Zsm5 Zeolite ◽

Si Engines ◽

Metal Doped ◽

Engine Emission

In recent investigations, it has been found that ZSM5 like catalysts were preferred nor the NOx reduction in the lean burn operating engines. The present experiment is focused on the spark ignition engine emission reduction using metal doped Cu-ZSM5 and Ce.Cu-ZSM zeolite based catalyst. Copper and cerium site was found very much active for the fast reduction of Nitrogen Oxides (NOx), hydrocarbon (HC) and carbon monoxide (CO) emissions. The engine used for the testing is a twin-cylinder petrol fuelled engine coupled with an eddy current dynamometer. The emissions from the engine were measured by AVL DI-gas analyzer. Initially, the emission reading was measured from the commercial catalytic converter that was fitted near to the exhaust and then the emissions were measured from using the Cu-ZSM5 and Ce.Cu-ZSM5 zeolite based catalytic converters. The results indicate that the zeolite based catalysts reduces the exhaust emission more than that of the commercial catalytic convertor.

Download Full-text