Increasing Efficiency in Gasoline Powertrains with a Two-Stage Variable Compression Ratio (VCR) System

2013 ◽  
Author(s):  
Henning Kleeberg ◽  
Dean Tomazic ◽  
Jürgen Dohmen ◽  
Karsten Wittek ◽  
Andreas Balazs
Keyword(s):  
Compression Ratio ◽  
Two Stage ◽  
Variable Compression Ratio ◽  
Variable Compression

Two-stage Variable Compression Ratio with Eccentric Piston Pin

MTZ worldwide ◽  
2009 ◽  
Vol 70 (2) ◽  
pp. 20-27 ◽  
Author(s):  
Stefan Pischinger ◽  
Karsten Wittek ◽  
Christof Tiemann
Keyword(s):  
Compression Ratio ◽  
Two Stage ◽  
Variable Compression Ratio ◽  
Variable Compression

Variable Compression Ratio by Means of a Modular System with a Two-stage Switchable Connecting Rod Length

MTZ worldwide ◽  
2018 ◽  
Vol 79 (6) ◽  
pp. 40-45
Author(s):  
Wolfgang Schöffmann ◽  
Helfried Sorger ◽  
Siegfried Lösch ◽  
Kai Arens
Keyword(s):  
Compression Ratio ◽  
Modular System ◽  
Connecting Rod ◽  
Two Stage ◽  
Variable Compression Ratio ◽  
Variable Compression

Coupled Dynamic Simulation of Two Stage Variable Compression Ratio (VCR) Connecting Rod Using Virtual Dynamics

2019 ◽  
Author(s):  
Prashant Mane ◽  
Denis Pendovski ◽  
Sebastian Sonnen ◽  
Alexander Uhlmann ◽  
Daniel Henaux ◽  
...  
Keyword(s):  
Dynamic Simulation ◽  
Compression Ratio ◽  
Connecting Rod ◽  
Two Stage ◽  
Variable Compression Ratio ◽  
Variable Compression

Two-Stage Variable Compression Ratio with Eccentric Piston Pin and Exploitation of Crank Train Forces

2009 ◽  
Vol 2 (1) ◽  
pp. 1304-1313 ◽  
Author(s):  
Karsten Wittek ◽  
Christof Tiemann ◽  
Stefan Pischinger
Keyword(s):  
Compression Ratio ◽  
Two Stage ◽  
Variable Compression Ratio ◽  
Variable Compression

scholarly journals Determination of Combustion Process Model Parameters in Diesel Engine with Variable Compression Ratio

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Saša Milojević ◽  
Radivoje Pešić
Keyword(s):  
Diesel Engine ◽  
Compression Ratio ◽  
Process Model ◽  
Internal Combustion Engines ◽  
Combustion Process ◽  
Exhaust Emission ◽  
Model Parameters ◽  
Connecting Rod ◽  
Variable Compression Ratio ◽  
Variable Compression

Compression ratio has very important influence on fuel economy, emission, and other performances of internal combustion engines. Application of variable compression ratio in diesel engines has a number of benefits, such as limiting maximal in cylinder pressure and extended field of the optimal operating regime to the prime requirements: consumption, power, emission, noise, and multifuel capability. The manuscript presents also the patented mechanism for automatic change engine compression ratio with two-piece connecting rod. Beside experimental research, modeling of combustion process of diesel engine with direct injection has been performed. The basic problem, selection of the parameters in double Vibe function used for modeling the diesel engine combustion process, also performed for different compression ratio values. The optimal compression ratio value was defined regarding minimal fuel consumption and exhaust emission. For this purpose the test bench in the Laboratory for Engines of the Faculty of Engineering, University of Kragujevac, is brought into operation.

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