When is the spark controlled compression ignition (SPCCI) mode engaged on a vehicle with the Mazda SkyActiv-X system?
A) During cruise conditions
B) During cold engine warmup
C) While under heavy load
D) At high engine speeds

Question

Quizplus · Accepted Answer

SPCCI mode is primarily engaged during cruise conditions to optimize fuel efficiency and reduce emissions by using a lean air-fuel mixture that is compressed to the point of auto-ignition, with the spark plug providing additional control over the timing of the combustion.

When Is the Spark Controlled Compression Ignition (SPCCI) Mode Engaged