Engine 2014: Motor Plants and Auxiliary Boilers

1. A three compression rings per piston and the minimum of two oil scraper rings
2. B one intake and one exhaust valve per cylinder provided no other means of scavenging is used
3. C one explosion relief valve in way of each alternate crank throw, with a minimum of two valves
4. D one crankshaft except in cases where an opposed piston design is required

Tip: press A-D to answer