Author(s):
1. Almir Blazevic, University of East Sarajevo, Faculty for Mechanical Engineering East Sarajevo, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina

Abstract:
In order to increase energy efficiency of the vehicle powertrain, the innovative solutions in the construction of internal combustion engines, its aggregates, systems and equipment must be obtained. A trend that is prevalent today is widely known as downsizing. Namely, downsizing involves reducing of engine volume (consequently, its mass) and keeping or even increasing the power output compared to a reference IC engines in the same time. However, structural changes coincide with changes of the IC engine’s dynamic load output and its oscillatory behavior. Certain modes where the resonance and the excessive amplitude of oscillation of IC engine crankshaft appears, can lead to its breakage. For this reason, besides classical damping system of the oscillation amplitude, in form of elastic dampers at the one of the crankshaft’s ends can be introduced, as well as the dual mass flywheel so enabling dynamic relief of IC engines while simultaneously balancing the angular velocity of the IC engine. In this paper, analysis of the dual mass flywheel application will be presented compared to the oscillatory behavior of IC engine with or without other damping systems used to decrease torsional oscillations. Besides the analysis, an optimization of the parameters, based on dual mass flywheel, will be performed (mass distribution and stiffness of the springs) in order to achieve a better output of the IC engine’s oscillatory behavior.

Thematic field:
TRAFFIC MEANS

Opening paper:
Yes

Date of abstract submission:
31.12.2010.

Number of visits:
874

Conference:
11^th International Conference on Accomplishments in Mechanical and Industrial Engineering

Applied paper from author