Power & torque

Sure you have read a car description and you found that: Max power: 140 hp @ 6000 rpm
Max torque : 150 Ipft @ 3500 rpm
What's that ?
, what does it describe?
and how important is it?
first you to know the meaning of them actully!!!!!!!!!!!!!!!!!

With getting involved in engineering equations that most people hate:

Force : In physics, a force is a push or pull that can cause an object with mass to change its velocity." The Unit is Newton (N)"

Imagine if if you have 1 kg object and you would like to pull it up you will need 10 N force to do that.

but if you would like to push it in the groung you will only need to overcome the friction force betwwen the object and the ground

In case of cars since it hase wheels it will be easier to push a wieght with wheels but has a friction resistance as well it's called (rolling resistance)

In case of car engines you will need to rotate the wheels to get the motion this is called (torque)

If you want to fasten a bolt with your hands it will be so hard

so you will have to use a wrench and the longer the distance between your hand and the bolt the easier the fastening the bolt .

That's why that torque unit is N.m

Torque: is the tendency of a force to rotate an object about an axis,

or pivot.

Just as a force is a push or a pull, a torque can be thought of as a twist. The symbol for torque is τ. the Greek letter tau.

so now lets assume that you have a torque of 10 N.m and your friend has the same torque 10 N.m but you have the ability to reach this torque at 2 seconds and your friend is in 5 seconds and you and him trie to pull a wight of 10 kg

,you will be able to pull the wight faster than him.

That explaines torque : 100 N.m @ 3000 rpm

this car is able to reach this torque at 3000 rpm

If you and your friend want to run beside each other, both of you ( for example)

reach 20 km/hr but you will reach this speed faster than him

so if we have to cars :

1. torque : 100 N.m @ 3000 rpm

2. torque : 100 n.m @ 1500 rpm

car 2 will accelerate faster that car one because it can reach it's max torque in shorter time.