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What is the exhaust valve face angle that is generally kept?(a) 25°(b) 30°(c) 45°(d) 45° or 30°This question was posed to me during an interview.This intriguing question originated from Poppet Valves topic in section Valve Timing Technologies of Automotive Engine Design

Answer» CORRECT ANSWER is (c) 45°

The best I can EXPLAIN: The EXHAUST valve face ANGLE is only 45°, as this increases its heat dissipation. In some cases, a further differential angle of about ½ deg to 1 deg is provided between the valve and its seating.


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