Modelling and Simulation of Variable Displacement Vane Pumps for IC Engine Lubrication

2004 ◽  
Author(s):  
S. Mancò ◽  
N. Nervegna ◽  
M. Rundo ◽  
G. Armenio
Keyword(s):  
Modelling And Simulation ◽  
Ic Engine ◽  
Variable Displacement

Optimizing the Efficiency of Electro-Hydraulic Powertrains

2006 ◽  
Author(s):  
Alexander J. Montgomery ◽  
Andrew G. Alleyne
Keyword(s):  
Intelligent Control ◽  
Operating Conditions ◽  
Control Algorithms ◽  
Prime Mover ◽  
Ic Engine ◽  
Engine Operation ◽  
Hydrostatic Transmission ◽  
Controlled Systems ◽  
Variable Displacement ◽  
Engine Power

The evolution of the hydrostatic transmission system from mechanical systems to electronically controlled systems creates opportunity for improvements in efficiency through the use of intelligent control algorithms. In systems for which the prime mover is an internal combustion (IC) engine, overall system efficiency depends greatly on the prime mover's operating conditions. The use of variable displacement pumps can add a degree of freedom and allow engine operation to be optimized. However, this strategy requires a desired engine power value based on operating states and load references. This paper proposes a novel solution to this problem by using a dynamic engine power demand estimate to meet steady-state load demands using minimal engine power.

scholarly journals Research on modelling and simulation of a new variable displacement oil pump

2019 ◽  
Vol 2019 (13) ◽  
pp. 350-354 ◽  
Author(s):  
Wei Zhang ◽  
Bin Wang ◽  
Yanhuan Zhang ◽  
Lele Peng ◽  
Mohan Liu ◽  
...  
Keyword(s):  
Modelling And Simulation ◽  
Oil Pump ◽  
Variable Displacement

scholarly journals Efficiency of a new internal combustion engine concept with variable piston motion

2014 ◽  
Vol 18 (1) ◽  
pp. 113-127 ◽  
Author(s):  
Jovan Doric ◽  
Ivan Klinar
Keyword(s):  
Fuel Consumption ◽  
Compression Ratio ◽  
Heat Engine ◽  
Integrated Treatment ◽  
Constant Volume ◽  
Ic Engine ◽  
Variable Compression Ratio ◽  
Variable Displacement ◽  
Engine Concept ◽  
Variable Compression

This paper presents simulation of working process in a new IC engine concept. The main feature of this new IC engine concept is the realization of variable movement of the piston. With this unconventional piston movement it is easy to provide variable compression ratio, variable displacement and combustion during constant volume. These advantages over standard piston mechanism are achieved through synthesis of the two pairs of non-circular gears. Presented mechanism is designed to obtain a specific motion law which provides better fuel consumption of IC engines. For this paper Ricardo/WAVE software was used, which provides a fully integrated treatment of time-dependent fluid dynamics and thermodynamics by means of onedimensional formulation. The results obtained herein include the efficiency characteristic of this new heat engine concept. The results show that combustion during constant volume, variable compression ratio and variable displacement have significant impact on improvement of fuel consumption.

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