Hidegindításkori

Hidegindításkori refers to a phenomenon experienced by internal combustion engines when starting from a cold state. This term, of Hungarian origin, literally translates to "at cold start." During a cold start, the engine's oil is thicker and less viscous, meaning it doesn't flow as easily to all the critical moving parts. This can lead to increased friction and wear during the initial moments of operation until the engine and oil reach their optimal operating temperature.

Factors that contribute to cold start wear include the slower circulation of lubricating oil and the greater density of the cold air-fuel mixture. Modern engine designs and synthetic lubricants have significantly reduced the severity of this issue compared to older vehicles. However, minimizing cold start events, such as by allowing the engine to warm up for a short period before driving, can still contribute to the longevity of the engine. The term is most commonly encountered in automotive contexts, discussing engine health and maintenance.