Engine Friction

What is Engine Friction?

Engine Friction can mean different things to different people. But for the purpose of this definition we are talking about what our programs do with this term.

Engine Friction is the friction that is caused by everything that goes into the engine and items that run off of the engine. We are talking about the bearings for the crankshaft, connecting rods and camshaft(s). Plus there is more friction in the valve train, from the lifters, rocker arms and the valve springs.

Another issue with Engine Friction are the items connected to the engine via drive belts. These items include (but not limited to) the alternator, power steering pump, water pump, air conditioning compressor and sometimes the cooling fan. These items are considered accessory loads.

Programs that take Engine Friction into account

We have 3 programs that work with Engine Friction when conducting Engine Simulation: Engine Analyzer v3.4, Engine Analyzer Plus v3.4. And Engine Analyzer Pro v3.9 also takes Engine Friction into account but has many more inputs for options in Engine Simulation.

Plus our Fuel Economy Calculator v1.1 takes Engine Friction into account when calculating fuel economy.