Which among the following type of piston ring is used for worn-out cylinders?(a) Delay action scraper ring(b) Composite rail scraper ring(c) Multi-piece oil control ring(d) Carbo glide ringI had been asked this question in an interview for internship.The question is from Engine Components in section Basic Engine Components of Automotive Engine Design

Which among the following type of piston ring is used for worn-out cyl

1.	Which among the following type of piston ring is used for worn-out cylinders?(a) Delay action scraper ring(b) Composite rail scraper ring(c) Multi-piece oil control ring(d) Carbo glide ringI had been asked this question in an interview for internship.The question is from Engine Components in section Basic Engine Components of Automotive Engine Design
Answer» Right choice is (b) Composite rail scraper ring Explanation: The composite rail scraper ring is highly useful for worn-out cylinders having OVALITY or taper in the bores. Several steel rails are chrome PLATED and have rounded ends provide a SMOOTH SCRAPING action reducing wear of CYLINDER wall.

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