How to Control the Throttle to Maintain a Fixed Speed?
2 Answers
You can control the vehicle's speed by adjusting the pressure applied to the throttle pedal. The car's throttle regulates the engine's throttle valve opening, which in turn controls the engine's air intake and fuel injection, thereby managing the engine's RPM. Below is some extended information about the throttle: 1. The throttle is essentially an air valve on the engine, a device that controls the airflow. 2. For proper combustion, the engine requires an appropriate air-fuel ratio, typically 14.7:1, meaning 14.7 liters of air to 1 liter of fuel. This ratio ensures optimal engine combustion. 3. The so-called throttle controls the airflow, and once the air volume is determined, the required fuel amount is calculated automatically by the car's internal computer. 4. When you press the throttle, the airflow increases, leading to more fuel injection and greater combustion force, which results in higher engine RPM. Conversely, releasing the throttle reduces the RPM.
As a seasoned driver with over 200,000 kilometers of experience, I believe maintaining constant speed through throttle control relies on three key anticipatory skills: reading road conditions, subtle ankle adjustments, and visual management. On highways, I anchor my heel to the floor and only apply gentle pressure with the ball of my foot - this prevents fatigue-induced shaking. When spotting an uphill ahead, I proactively increase throttle by about 1cm; before descents, I ease off early to coast on momentum. The golden rule is scanning 200 meters ahead - the moment I detect traffic slowing, I lift off rather than waiting to brake hard. Regular tire pressure checks and throttle body maintenance also help, as underinflated tires increase fuel consumption forcing constant throttle corrections.
