What does anti-lag system mean in cars?

1 Answers
Andres
07/30/25 2:14am
Anti-lag system refers to the anti-lag ignition system. Here is more information about anti-lag: 1. Anti-lag is an electronic device used in rally racing or drag racing, with the basic function of reducing turbo lag. 2. The working principle of anti-lag involves forcibly injecting fuel into the cylinder without ignition, then igniting it when the exhaust valve opens after compression to expel the exhaust gases and maintain the turbocharger's speed, thereby reducing turbo lag. 3. Anti-lag stops the ignition process during throttle-off gear shifts, intentionally allowing the fuel-air mixture to enter the exhaust manifold after the exhaust valve opens. The extremely high temperature in the manifold causes immediate combustion upon contact, and the powerful explosion pressure drives the turbocharger's exhaust turbine, keeping the compressor turbine spinning at high speed to maintain boost pressure. This ensures boost effect even during low-speed driving or gear shifts. 4. The main purpose of using anti-lag is to keep the turbocharger operating normally when the engine does not require power output but still needs substantial air intake, especially during cornering in turbocharged racing cars when reducing power, so that it can respond quickly when power output is needed.
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