Is engine capacity measured with the engine in a 'normal' position, ie with the pistons in different positions in the cylinders, or is it measured as though all the pistons were at the bottom?
2007-09-02 03:53:43 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Engine capacity is calculated by the volume of the actual cylinders the pistons run in. So a six cylinder engine with each cylinder being 500cc would give a capacity for the engine of 3Litres. If you have an unknown engine, work it out yourself. Diameter of cyliner divided by 2 to give radius and depth of cyliner measurements. Now calculate for each cylinder radius squared x PI (22/7)(roughly) x by depth of cylinder. Giving total volume for cylinder - then multiply by number of cylinders. Heh presto! the answer. (If my maths is still up to date!)
2007-09-02 04:05:48 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It is the volume that all the pistons move through, cumulatively.
4 cylinder, 2 litre engine, each piston moves through 500cc.
Get the idea?
If you know the bore and stroke, and number of cylinders, you can use simple maths to work it out.
Additional:
Focus (below): WRONG! then you'd measure the volume of the combustion chamber as well (where the BANG happens)
2007-09-02 11:00:50 · answer #2 · answered by ? 7 · 1⤊ 0⤋
It is the cubic capacity of the cylinder no matter where the pistons are
2007-09-02 11:06:21 · answer #3 · answered by mickeymouse 5 · 0⤊ 0⤋
It is measured as if all the pistons were at the bottom.
2007-09-02 11:01:25 · answer #4 · answered by focus 6 · 0⤊ 1⤋
the cubic capacity is measured with all the pistons at the bottom (it is the maximum swept area)
2007-09-02 12:08:13 · answer #5 · answered by chilledoutpaul 2 · 0⤊ 3⤋
It's the total volume of air that the engine moves in two complete revolutions.
2007-09-02 11:08:27 · answer #6 · answered by Mr. KnowItAll 7 · 1⤊ 1⤋
1/2 bore squared X Pi (3.14159) X stroke X no. of cylinders.
2007-09-02 12:02:44 · answer #7 · answered by Anonymous · 0⤊ 0⤋