Engine and engine control method

An engine, comprising:

• a combustion chamber;
• a working member positioned adjacent the combustion chamber;
• engine controls operable to cause the engine to produce power by combusting fuel in the combustion chamber to drive the working member;
• the engine controls being operable to, when starting the engine and before the engine has reached an idle speed, in response to achieving at least one first predetermined condition involving an air temperature, execute a cold-start algorithm for controlling fuel delivery to the combustion chamber;
• wherein the air temperature is at least one of an ambient air temperature and an intake air temperature;
• and
• wherein executing the cold-start algorithm for controlling fuel delivery to the combustion chamber includes delivering fuel to the combustion chamber in a manner to compensate for cold conditions and promote successful combustion.

An engine, comprising:

• a combustion chamber;
• a working member positioned adjacent the combustion chamber;
• engine controls operable to cause the engine to produce power by combusting fuel with air in the combustion chamber to drive the working member;
• the engine controls being further operable to
• in at least some circumstances, control fuel delivery to the combustion chamber at least partially as a function of an air temperature, the air temperature being at least one of an ambient air temperature and an intake air temperature,
• in at least some circumstances, control fuel delivery to the combustion chamber at least partially as a function of an engine temperature, and
• while causing the engine to produce power, change the relative significance of the air temperature and the engine temperature as factors in controlling fuel delivery to the combustion chamber.