3B Scientific Four-Stroke Engine, Transparent User Manual
3b scientific® physics
3B SCIENTIFIC® PHYSICS
3B Scientific GmbH ▪ Rudorffweg 8 ▪ 21031 Hamburg ▪ Germany ▪ www.3bscientific.com
Subject to technical amendments
© Copyright 2012 3B Scientific GmbH
Four-Stroke Engine, Transparent 1002995
Instruction sheet
04/12 JS
1 Outlet
2 Spark plug
3 Inlet
4 Piston
5 Combustion
chamber
6 Valve
control
7 Crank
shaft
1. Description
A four-stroke engine (or Otto engine) is a kind of
internal combustion engine which requires four
strokes to operate, whereby the combustible
mixture of air and fuel is ignited by a spark plug.
The crankshaft conveys the force and also con-
trols the changes in the gas mixture.
Fig. 1: Working strokes of four-stroke engine
(from left to right):
Intake, compression, ignition (power), exhaust
2. Operation
Additionally recommended:
Overhead Projector (230 V, 50/60 Hz) 1003264
or
Overhead Projector (115 V, 50/60 Hz) 1003263
•
Lay the transparency on the daylight projec-
tor.
•
Move the components by hand to the places
which correspond to the various strokes.