TY - JOUR ID - TI - Theoretical and Experimental Study of Pressure Prediction in Crevices Region between Piston Rings for Diesel Engine AU - Hayder Q. Alwan PY - 2011 VL - 29 IS - 11 SP - 2329 EP - 2345 JO - Engineering and Technology Journal مجلة الهندسة والتكنولوجيا SN - 16816900 24120758 AB - An engine of Zeetor type Z – 6901 of three compression rings is employed in this investigation to accomplish the experimental work. The indicator diagram i.e. P=ƒ(α) is recorded at different engine speeds. The present work elucidates the measurement and indication of gas pressure within the combustion chamber as a function of crank angle. The study contains the prediction of pressure in inter-ringvolume pressure behind piston ring during engine operation.For verification of a mathematical model a static test rig apparatus isdesigned in order to measure the inter-ring volume pressure within the range of compression pressure i.e. 1bar to 33.8bar. The comparison between mathematical and experimental results show good agreement

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