When is the Best Time to Shift Gears?
1 Answers
Generally, the optimal time to shift gears in most cars is when the engine reaches 70% or more of its maximum torque RPM, commonly referred to as shifting at 2000 RPM. Points to note when shifting gears: First, determine if the engine is a high-speed type (where maximum torque occurs at higher RPMs). If so, shifting can be done between 2500 and 3000 RPM. Under normal circumstances, shifting around 2000 RPM is more economical (better fuel efficiency), while shifting above 2500 RPM is better for the engine. For typical family cars with a 1.6L engine, it's advisable to keep the engine RPM within the efficient range, ideally around 3000 RPM. Methods for shifting gears: When changing gears, always remember the principle of "accelerate before upshifting, decelerate before downshifting." Before upshifting, press the accelerator to increase the speed, and before downshifting, release the accelerator to reduce the speed. Acceleration shifting: Use the "double-clutching" method when upshifting. Follow the steps of "press (clutch), shift (to neutral), press (clutch), shift (to higher gear)" by quickly pressing the clutch pedal twice to smoothly shift to a higher gear. Deceleration shifting: When downshifting, follow the steps of "press (clutch), shift (to neutral), release (clutch), rev (throttle), press (clutch), shift (to lower gear)." Press the clutch twice, rev the engine once in neutral after the first clutch press, hold briefly, then press the clutch pedal again to shift to a lower gear.
