ANALYSIS OF THE OPPORTUNITIES FOR IMPROVING DIESEL ENGINE EFFICIENCY WHEN MOVING FROM V8 TO L6 CONFIGURATION
Abstract
The goal of this paper was to estimate a gain in fuel efficiency of an eight-cylinder V-shaped (V8) turbocharged truck diesel engine if it is replaced by a six-cylinder inline (L6) diesel engine having the same displacement and power. For this, a V8 engine with two turbochargers and L6 engine with one turbocharger were compared by simulation using the AVL BOOST software. Both engines had a similar torque by the full load characteristic. The factors influencing the fuel efficiency: indicator efficiency, pumping losses, turbocharger efficiency and others were analyzed. The Р6 engine demonstrated a uniform pattern of pressure pulsations in the exhaust manifold and at the turbine inlet. The V8 engine had an uneven pattern and higher amplitude of pulsations which resulted in higher pumping losses and lower turbine efficiency. The brake specific fuel consumption of the Р6 engine was by 3.5-7.0 percent lower than that of the V8 engine.
About the Authors
Vladislav V. Kremnev
MADI
Russian Federation
Russian Federation
student
Vladimir V. Sinyavsky
MADI
Russian Federation
Russian Federation
Ph.D., associate professor
References
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Review
Рецензент: А.Ю. Дунин, канд. техн. наук, доц., МАДИ
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