Abstract
The necessity to develop more economical engines has resulted in an ever-increasing approximation of the combustion process towards the isochore constant volume combustion, which causes a considerable increase in pressure rate in the combustion chamber. It is known that this can result in malfunctioning and damage to the power plant components. This was the reason to investigate theoretically and experimentally the mechanisms that produce these problems. Basically, it was shown that on the one hand high pressure rate values cause the mass-spring-system piston-connecting rod to move in longitudinal oscillations (tertiary motion). The amplitude of these oscillations depends solely on the pressure rate. On the other hand the 1. piston ring is subject to high radial forces and is drawn inwards from the cylinder wall. This causes radial cracks which could break the ring.
Original language | English |
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Pages (from-to) | 555-563 |
Number of pages | 9 |
Journal | Proceedings - Society of Automotive Engineers |
State | Published - 1990 |
Externally published | Yes |
Event | Eighteenth FISITA Congress - The Promise of New Technology in the Automotive Industry - Torino, Italy Duration: 7 May 1990 → 11 May 1990 |