Effect of Fuel Atomization on the Lean-Burn Characteristics Under Steady Condition in Spark-Ignition Engine

1996 ◽  
Author(s):  
Kazumitsu Kobayashi ◽  
Seiichi Shiga ◽  
Takuma Kon-no ◽  
Shigeru Nakajima ◽  
Takehisa Handa ◽  
...  
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Steady Condition ◽  
Lean Burn ◽  
Fuel Atomization

Effect of Fuel Atomization at a Fuel Supply System on the Lean Burn Characteristics in a Spark-Ignition Engine

1991 ◽  
Author(s):  
Seiichi Shiga ◽  
Kazumitsu Kobayashi ◽  
Takuma Kon-No ◽  
Takao Karasawa ◽  
Toshio Kurabayashi
Keyword(s):  
Spark Ignition ◽  
Supply System ◽  
Spark Ignition Engine ◽  
Lean Burn ◽  
Fuel Supply ◽  
Fuel Atomization ◽  
Fuel Supply System

Investigation of Cyclic Variation of IMEP Under Lean Burn Operation in Spark-Ignition Engine

1997 ◽  
Author(s):  
Kiyoshi Ishii ◽  
Takashi Sasaki ◽  
Yasuhiro Urata ◽  
Kazuo Yoshida ◽  
Toshihisa Ohno
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Cyclic Variation ◽  
Lean Burn

Simulation of Extended Expansion Lean Burn Spark Ignition Engine

2004 ◽  
Author(s):  
A. Manivannan ◽  
R. Ramprabhu ◽  
P. Tamilporai ◽  
S. Chandrasekaran
Keyword(s):  
Heat Transfer ◽  
Compression Ratio ◽  
Thermal Efficiency ◽  
Numerical Study ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Valve Closure ◽  
Intake Valve ◽  
Lean Burn ◽  
Atkinson Cycle

This paper deals with Numerical Study of 4-stoke, Single cylinder, Spark Ignition, Extended Expansion Lean Burn Engine. Engine processes are simulated using thermodynamic and global modeling techniques. In the simulation study following process are considered compression, combustion, and expansion. Sub-models are used to include effect due to gas exchange process, heat transfer and friction. Wiebe heat release formula was used to predict the cylinder pressure, which was used to find out the indicated work done. The heat transfer from the cylinder, friction and pumping losses also were taken into account to predict the brake mean effective pressure, brake thermal efficiency and brake specific fuel consumption. Extended Expansion Engine operates on Otto-Atkinson cycle. Late Intake Valve Closure (LIVC) technique is used to control the load. The Atkinson cycle has lager expansion ratio than compression ratio. This is achieved by increasing the geometric compression ratio and employing LIVC. Simulation result shows that there is an increase in thermal efficiency up to a certain limit of intake valve closure timing. Optimum performance is attained at 90 deg intake valve closure (IVC) timing further delaying the intake valve closure reduces the engine performance.

The nature of early flame development in a lean-burn stratified-charge spark-ignition engine

2004 ◽  
Vol 136 (3) ◽  
pp. 283-302 ◽  
Author(s):  
P.G. Aleiferis ◽  
A.M.K.P. Taylor ◽  
K. Ishii ◽  
Y. Urata
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Lean Burn ◽  
Stratified Charge ◽  
Flame Development

Effect of adding hydrogen on performance of a lean-burn spark ignition engine with high EGR rates

2018 ◽  
Vol 2018 (0) ◽  
pp. J0710102
Author(s):  
Shuhei SATO ◽  
Shintaro FUNAMI ◽  
Satoshi SAKAIDA ◽  
Kotaro TANAKA ◽  
Mitsuru KONNO
Keyword(s):  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Lean Burn

Linear Parameter-Varying Lean Burn Air-Fuel Ratio Control for a Spark Ignition Engine

2007 ◽  
Vol 129 (4) ◽  
pp. 404-414 ◽  
Author(s):  
Feng Zhang ◽  
Karolos M. Grigoriadis ◽  
Matthew A. Franchek ◽  
Imad H. Makki
Keyword(s):  
Time Delay ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Linear Parameter ◽  
Lean Burn ◽  
Linear Parameter Varying ◽  
Variable Time Delay ◽  
Variable Time ◽  
Fuel Ratio ◽  
Parameter Varying

Maximization of the fuel economy of the lean burn spark ignition (SI) engine strongly depends on precise air-fuel ratio control. A great challenge associated with the air-fuel ratio feedback control is the large variable time delay in the exhaust system. In this paper, a systematic development of an air-fuel ratio controller based on post lean NOx trap (LNT) oxygen sensor feedback using linear parameter-varying (LPV) control is presented. Satisfactory stability and disturbance rejection performance is obtained in the face of the variable time delay. The LPV controller is simplified to an explicit parameterized gain scheduled lead-lag controller form for the ease of implementation. A Ford F-150 truck with a V8 4.6 l lean burn engine was used to demonstrate the LPV air-fuel ratio control design. Both simulation and experimental results demonstrate that the designed controller regulates the tailpipe air-fuel ratio to the preset reference for the full engine operating range.

Hydrogen Blended Natural Gas Operation of a Heavy Duty Turbocharged Lean Burn Spark Ignition Engine

2004 ◽  
Author(s):  
S. R. Munshi ◽  
C. Nedelcu ◽  
J. Harris ◽  
T. Edwards ◽  
J. Williams ◽  
...  
Keyword(s):  
Natural Gas ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Heavy Duty ◽  
Lean Burn
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