What does EMS mean in cars?
2 Answers
Engine Management System (abbreviated as EMS). Below is relevant information: 1. EMS uses various sensors to convert conditions such as the amount of air intake, coolant temperature, engine speed, and acceleration/deceleration into electrical signals, which are then sent to the controller. 2. The controller compares this information with stored data, performs precise calculations, and outputs control signals. EMS can not only precisely control fuel supply, replacing traditional carburetors, but also manage ignition timing and idle air flow, significantly improving engine performance. 3. The engine valve drive mechanism adopts a hydraulic support roller rocker arm structure. Compared to the commonly used hydraulic tappet valve drive mechanism in current gasoline engines, this innovative design offers the advantage of relatively lower friction torque, effectively reducing engine power consumption and fuel consumption.
The EMS (Engine Management System) is essentially the brain of the engine, controlling core functions like fuel injection, ignition, and exhaust. Last time my old car’s check engine light came on, the mechanic hooked up a diagnostic tool and found that a sensor in the EMS was acting up. Modern cars rely even more on this system—it governs throttle response, fuel efficiency, and more. If the system malfunctions, the car might shake like a massage chair or even refuse to start. Last year, a colleague’s car suddenly lost power, and it turned out rodents had chewed through the EMS wiring. During routine maintenance, don’t just change the oil—make sure the technician scans for trouble codes too.
