SI-Engine Design Concept for Reducing Cyclic Variations

2005 ◽  
Author(s):  
Ken Naitoh ◽  
Yuji Kaneko ◽  
Kazuya Iwata
Keyword(s):  
Design Concept ◽  
Si Engine ◽  
Engine Design ◽  
Cyclic Variations

Effects of Combustion Phasing, Combustion Duration, and Their Cyclic Variations on Spark-Ignition (SI) Engine Efficiency

2008 ◽  
Vol 22 (5) ◽  
pp. 3022-3028 ◽  
Author(s):  
Fanhua Ma ◽  
Yu Wang ◽  
Junjun Wang ◽  
Shangfen Ding ◽  
Yefu Wang ◽  
...  
Keyword(s):  
Spark Ignition ◽  
Si Engine ◽  
Engine Efficiency ◽  
Combustion Duration ◽  
Cyclic Variations

Transformation of Existing SI Engine to Work with Pressurized Air

2020 ◽  
Vol 6 (11) ◽  
pp. 79-86
Author(s):  
P.Srinivas Reddy
Keyword(s):  
Environmentally Friendly ◽  
Power Source ◽  
Si Engine ◽  
Maximum Capacity ◽  
Engine Piston ◽  
Engine Design ◽  
Engine Cylinder ◽  
Fundamental Process ◽  
Center Position ◽  
Efficient Power

This project is an attempt to highlight the various possibilities of acquiring an environmentally friendly and efficient power source. The use of high pressure, expanding gas, to power the engine piston is the fundamental process in the function of all engines with reciprocating pistons. In this project we have used highly pressurized gas to cause reciprocation of the piston and thereby produce power. This gas is introduced into the engine cylinder at the Top Dead Center position of the piston through a timing valve, thereby giving the gas the maximum capacity to impart its force on the piston. The emission from this process is nil and 100% environmentally friendly. We have shown that with the smallest of changes in our existing engine design we can incorporate this technology in our present modes of transportation. The simple yet dramatic change brought by this system is according to us the most significant aspect of our invention. We have shown a positive way of implementing this technology and as always with any system; this has tremendous potential for improvement and perfection

Cyclic variations on LPG and gasoline-fuelled lean burn SI engine

2006 ◽  
Vol 31 (12) ◽  
pp. 1950-1960 ◽  
Author(s):  
M.A. Ceviz ◽  
F. Yüksel
Keyword(s):  
Si Engine ◽  
Lean Burn ◽  
Cyclic Variations

Evolution of a standardized monopropellant rocket engine design concept

1974 ◽  
Author(s):  
R. SACKHEIM ◽  
R. CARLSON ◽  
H. MACKLIS ◽  
D. LEE
Keyword(s):  
Rocket Engine ◽  
Design Concept ◽  
Engine Design

Predesign of an Internal Combustion Engine Intake Manifold by Numerical Solution of Induction Flow

2003 ◽  
Author(s):  
Vahid Esfahanian ◽  
Ehsan S. Sobhani ◽  
Mehrdad K. Elyasi ◽  
Hamid Karbalaireza
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Splitting Method ◽  
Computer Code ◽  
Internal Combustion ◽  
Intake Manifold ◽  
Si Engine ◽  
Gas Dynamics Equations ◽  
Engine Design ◽  
Semi Empirical

A method is proposed to calculate the characteristics of compressible flow in intake manifold of an internal combustion engine, which can be used as an iterative process to determine the main dimensions of the manifold, such as pipes length and diameter, at the primary stages of internal combustion engine design. To calculate the flow field in the pipes, a computer code has been developed to solve the quasi 1-D Euler’s gas dynamics equations using flux-splitting method. Boundary conditions, such as valves, are modeled using experimental data along with some semi-empirical equations. To verify the accuracy of the method, a four cylinder SI engine manifold, with different intake manifold pipe lengths is simulated by the developed computer code and the overall performance characteristics of the engine such as power, torque and volumetric efficiency are obtained and compared with experiments.

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