Определение pre-ignition в Английский Язык Английский Язык словарь
(Otomotiv) A sound that occurs in the cylinders when the fuel/air mixture is ignited too soon and the subsequent explosion hits the piston as it travels up the cylinder on the compression stroke. Usually, it's due to faulty timing, low octane gas, or fragments of burning carbon in the cylinders. Also called pinging or pre-ignition. It sounds like marbles rattling in a can and can be heard best when accelerating up hills. This sound can also be caused by impending mechanical failure within the engine due to extreme wear of a piston or bearing