What Causes a Burning Smell in the Engine Compartment?

[LeKevin]

The reasons for a burning smell in the engine compartment: 1. It could be due to poor coordination between the throttle and clutch during startup, causing the clutch plate to overheat and emit a burning odor; 2. Frequently running the car engine at excessively high RPMs can easily damage the engine. From a technical perspective, high RPMs occur when the throttle valve opens wider, increasing the engine speed. The throttle does not control the fuel injection volume but rather the throttle valve opening; 3. A smaller throttle valve opening results in less air-fuel mixture entering the cylinders, reducing engine power output, and vice versa. The more air-fuel mixture enters the cylinders, the greater the combustion force, which increases piston movement speed and engine RPM; 4. Overall, lower RPMs save fuel, reduce noise, and extend engine life (due to reduced friction).