엔진오일 교환 수리 사례

2026. 6. 30. 작업

난이도 & 준비물

증상

How does ambient temperature affect engine efficiency and fuel consumption?

처리 내용

tl;dr: Ambient air temperature should generally not interfere with engine efficiency or fuel consumption, but will affect overall power output. Do not confuse efficiency with power output . These are two separate things. When your intake charge is more dense, you can throw more fuel at it and creates more power . ( NOTE: The idea for the engine management system is to maintain a general 14.6:1 air to fuel ratio (also called stoichiometric or "stoic" for short). This is the so-called "perfect" mixture of air and fuel where all of the fuel is burned with no extra oxygen being left afterwards. Unfortunately, the stoic mixture is not usually obtained. This happens because of two problems which arise, both having to do with the amount of heat which is created during the combustion process. First, the hotter combustion can cause detonation. Second, above a combustion temperature of around 1700degF, nitrogen in the air which is brought into the engine (along with the oxygen -- air contains ~7