Power and Torque in Vehicles — Lesson 3

This lesson covers the concepts of power and torque required for vehicle acceleration. It explains how to overcome gradient resistance, rolling resistance, and aerodynamic resistance. The lesson also discusses the power and torque required during a climb, and how these factors are independent of velocity. It further elaborates on how a vehicle's acceleration is often defined when purchasing, and how this can be calculated assuming linear acceleration. The lesson also explores how power requirements can be reduced by accelerating faster initially and then slowing down. Examples of power and torque requirements for different types of vehicles, such as two-wheelers, rickshaws, and cars, are provided for better understanding.

Video Highlights

00:18 - Introduction
01:20 - Linear acceleration and the force required to reach maximum velocity
02:59 - Work done during acceleration and the average acceleration power
04:10 - How power requirement changes with acceleration and velocity
08:04 - How power and torque requirements change for different vehicles like two-wheelers, rickshaws, and cars
12:03 - Impact of climbing down on energy and power requirements
13:02 - Home assignments

Key Takeaways

- Power and torque are crucial for vehicle acceleration.
- Vehicles need to overcome gradient resistance, rolling resistance, and aerodynamic resistance during acceleration.
- The power and torque required during a climb are independent of velocity.
- Acceleration is often a defining factor when purchasing a vehicle.
- Power requirements can be reduced by accelerating faster initially and then slowing down.
- Different types of vehicles have different power and torque requirements.