What does D-4ST represent?

1 Answers
LeBraxton
07/30/25 8:40am
D-4ST is a twin-scroll turbocharged engine. Below are relevant details about D-4ST: Introduction: The "D" engine adopts a dual injection system, "4" represents 4-stroke, "S" stands for the enhanced version, and "T" indicates turbocharging. D4S Principle: D4S dual-mode fuel injection. Unlike other manufacturers' pure direct injection, D4S combines both direct injection and port injection designs. During cold starts and low-load conditions, port injection ensures more thorough fuel mixing and cleans the intake tract, preventing carbon buildup and dirt accumulation in the intake tract and valves. At medium loads, direct injection starts to intervene, while under heavy loads, only the direct injection system operates. The two sets of fuel injection systems combine the advantages of both port injection and direct injection.
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