V. Basic principle of piston engine
1. Piston moving down → taking in air and gasoline;
2. Piston moving up → compressing the mixture;
3. Piston moving down → igniting the compressed gas; which
burns and expands to drive the piston;
4. Piston moving up → discharging exhaust gas
As shown below:
Intake
Compression
Working
Exhaust
When the single-cylinder engine is working, for every two turns
of the crankshaft, the piston makes 4 straight-line reciprocating
motions in the cylinder to complete a working procedure (4
strokes), the mixture in the cylinder is ignited, and the bursting gas
pushes the piston to make the crankshaft rotate via the crankshaft
connecting rod, realizing the straight-line reciprocating motion of
the piston in the cylinder. The continuous vertical motion of the
piston turns into the continuous rotary motion of the crankshaft
to output power continuously and make the engine run normally.
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Summary of Contents for Craftsman DM17-S-T
Page 1: ...PRODUCT DESCRIPTION...
Page 18: ...M3 screw 058 2 11 Mounting of connecting screws Assembly of crankcase completed 13...
Page 34: ...Generator assembly completed Generator pulley 048 M4 nut 055 7 3 Mounting of pulley 29...
Page 35: ...M3 screw 063 Crankcase 7 4 Combination of crankcase and generator assembly 30...
Page 41: ...M3 screw 059 Guide wheel stand 9 2 Combination of guide wheel and crankcase 36...
Page 42: ...Overall engine assembly completed Guide wheel assembly 37...
Page 53: ...M2X5 M1 6X4 M3X8 48...