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BP-020 · Stirling engine
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A
A
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C
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D
D
E
E
F
F
302
170
Ø67.6
e=13.5
22
23
17
2
3
1
D
E
AXIAL SECTION
SCALE 1:1
20
19
16
18
DETAIL D
HOT JOINT, GAP REGENERATOR · SCALE 5:1
13
14
15
11
12
DETAIL E
PISTON 13–15, RIDING WITH IT · 2:1
Ø110
24
5
REAR VIEW
FLYWHEEL ON SHAFT 5
SCALE 1:2.5
0.5
1.0
1.5
2.0
2.5
3.0
15
20
25
30
35
40
45
GAS VOLUME V, cm³
PRESSURE p, bar abs
DIAGRAM 1
P–V · ACCENT: THIS TURN · SHADED: W = ∮p dV · DASHED: FULL FLAME
NOTES
1. SCHMIDT: ISOTHERMAL SPACES, p = mR/(Ve/Th + Vr/Tr + Vc/Tc), Tr LOG MEAN.
2. SWEPT 23.9 cm³; GAP REGENERATOR 1 mm, 9.8 cm³; Ve LEADS Vc 109°.
3. AIR SEALED AT 20 °C, 1 atm. W = ∮p dV; TORQUE W/2π AGAINST FRICTION.
4. STALLS BELOW Th ≈ 388 K. MOTION DRAWN AT 1/20 OF ENGINE SPEED.
ITEM
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DESCRIPTION
BASE 170×100×20
CRANKCASE
WOOD SCREW 6×25 DIN 571
SPUR GEAR m1 z40
GEAR SHAFT Ø8, NUT M8
CRANK PIN Ø6
CONNECTING ROD, 34 CTRS
YOKE PIN 6m6×16 ISO 8734
PISTON YOKE
DISPLACER YOKE
PISTON ROD TUBE Ø10×1.5
DISPLACER ROD Ø5
POWER PISTON Ø40
PISTON RING Ø40×1.4
ROD BUSHING Ø5/Ø10×14
CYLINDER LINER Ø40/Ø46
COOLER CYLINDER, 10 FINS
CAP SCREW M5×12 ISO 4762
GASKET Ø40/Ø76×1
HOT CAP Ø42×1, ON FLANGE
DISPLACER Ø38×80
HEAT SHIELD Ø67.6×0.8
BURNER RING Ø6×1, 12 JETS
FLYWHEEL Ø110
HEX NUT M5 ISO 4032
MATERIAL
OAK, OILED
EN AC-43000
STEEL, ZINC
C45
C45 / STEEL 8
100Cr6
EN AW-7075
STEEL, HARDENED
C45
C45
E355
1.4301
EN AW-2618
PTFE + 25% CARBON
CuSn8
EN-GJL-250
EN AW-6082
STEEL 12.9
GRAPHITE FOIL
1.4841 / 1.4301
1.4301, 0.5
1.4301
CuZn37
EN-GJL-250
STEEL 8
QTY
1
1
4
2
2
2
4
4
1
1
1
1
1
2
1
1
1
10
1
1
1
1
1
1
1
TITLE
STIRLING ENGINE · BETA
DWG NO
BP-020
SCALE
1:1
SIZE
A2
SHEET
1 / 1
DRAWN
CLAUDE
DATE
2026-10-15
MATERIAL
SEE PARTS LIST
GENERAL TOL.
ISO 2768-m
UNITS
mm · K · bar abs
LIVE · DRAG THE FLYWHEEL OR GEARS · ↑ ↓ BURNER · SPACE FLAME
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slow
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