The start is performed by direct injection of air into the cylinders through the startingair valves in the cylinder heads.
这个启动，是由直接注射空气进入气缸，通过在气缸正面的启动空气阀完成的。
2
A small electric heating element in an internal-combustion engine that facilitates starting by preheating the air in a cylinder and is used especially in diesel engines.