33:
122:
168:
using an interference fit with the small end eye instead, with the gudgeon pin journals in the piston functioning as bearings. This arrangement is usually more difficult to manufacture and service because two bearing surfaces or inserted sleeves complicate the design. In addition, the pin must be precisely set so that the small end eye is central. Because of
184:. No interference fit is used in any instance and the pin 'floats' entirely on bearing surfaces. The average rubbing speed of each of the three bearings is halved and the load is shared across a bearing that is usually about three times the length of the semi-floating design with an interference fit with the piston.
167:
into the eye of the small end, which has an interference fit with the aperture of the small end. During overhaul, it is usually possible to replace this bearing sleeve if it is badly worn. The reverse configuration, fixing the gudgeon pin to the connecting rod instead of to the piston, is implemented
92:
that may be physically separated from both the connecting rod and piston or crosshead. The design of the gudgeon pin, especially in the case of small, high-revving automotive engines is challenging. The gudgeon pin has to operate under some of the highest temperatures experienced in the engine, with
109:
loads, with some of the highest pressure loadings of any bearing in the whole engine. To overcome these problems, the materials used to make the gudgeon pin and the way it is manufactured are amongst the most highly engineered of any mechanical component found in internal combustion engines.
75:
that connects to the piston via a rod. A gudgeon is a pivot or journal. The origin of the word gudgeon is the Middle
English word gojoun, which originated from the Middle French word goujon. Its first known use was in the 15th century.
172:
considerations, this arrangement was more usual for single-cylinder engines as opposed to multiple cylinder engines with long cylinder blocks and crankcases, until precision manufacturing became more commonplace.
180:
In the fully floating configuration, a bearing surface is created both between the small end eye and gudgeon pin and the journal in the piston. The gudgeon pins are usually secured with
320:
155:
bearing thus acts as the bearing alone. In this configuration, only the small end bearing requires a bearing surface, if any. If needed, this is provided by either
313:
67:, and provides a bearing for the connecting rod to pivot upon as the piston moves. In very early engine designs, including those driven by
129:
Typical construction of gudgeon pin (wrist pin) is shown on the picture. The design depend on technological and technical effectiveness.
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306:
712:
408:
254:
The Sizes of Motors for Trucks and
Outline of British Practice in This Field: Part Two: Outline of British Truck Motor Design
231:
737:
290:
97:
due to its location, while remaining small and light so as to fit into the piston diameter and not unduly add to the
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877:
466:
152:
697:
913:
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572:
218:
Nunney, Malcolm James (2007) "The
Reciprocating Piston Petrol Engine: Gudgeon pins and their location"
45:
17:
101:. The requirements for lightness and compactness demand a small diameter rod that is subject to heavy
537:
772:
687:
522:
160:
278:
Hillier, Victor Albert Walter and
Pittuck, Frank William (1991) "The Petrol Engine: Gudgeon pins"
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872:
707:
607:
252:
882:
661:
622:
587:
428:
283:
223:
164:
71:, and many very large stationary or marine engines, the gudgeon pin is located in a sliding
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332:
136:
In the semi-floating configuration, the pin is usually fixed relative to the piston by an
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Gudgeon pins use two broad design configurations: semi-floating and fully floating.
242:
Webster's
Seventh New Collegiate Dictionary, G & C Merriam Company, 1963, p. 370
159:
the small end bearing journal with a suitable metal, or more usually by inserting a
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Gudgeon pin connection at connecting rod. Gudgeon pin fits into
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806:
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short hollow rod made of a steel alloy of high strength and
257:(in Estonian). The Automobile . 1916. pp. 502–504.
282:(4th ed.) Stanley Thornes Pub., Cheltenham, England,
900:
314:
222:(4th ed.) Butterworth-Heinemann, Oxford, UK,
27:Pin that holds connecting rod to piston head
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144:in the piston. (This replaced the earlier
280:Fundamentals of Motor Vehicle Technology
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214:
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120:
31:
14:
901:
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207:
335:components, systems and terminology
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220:Light and heavy vehicle technology
25:
925:
113:
84:The gudgeon pin is typically a
657:Propeller speed reduction unit
245:
236:
13:
1:
200:
467:Capacitor discharge ignition
7:
188:
125:Construction of gudgeon pin
79:
46:internal combustion engines
10:
930:
860:
794:
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725:
670:
644:
635:
510:
477:Electronic fuel injection
452:
349:
340:
59:US English) connects the
523:Aircraft engine starting
568:Mean effective pressure
57:wrist pin or piston pin
608:Time between overhauls
126:
41:
883:Ice protection system
623:Volumetric efficiency
588:Overhead valve engine
124:
35:
868:Auxiliary power unit
748:Flight data recorder
837:Pressure carburetor
573:Naturally aspirated
543:Engine displacement
852:Updraft carburetor
726:Engine instruments
652:Propeller governor
548:Four-stroke engine
195:List of auto parts
127:
99:reciprocating mass
42:
914:Engine components
909:Engine technology
896:
895:
733:Annunciator panel
721:
720:
631:
630:
613:Two-stroke engine
583:Overhead camshaft
563:Manifold pressure
533:Compression ratio
232:978-0-7506-8037-0
170:thermal expansion
16:(Redirected from
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878:Hydraulic system
698:Counter-rotating
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394:Hydraulic tappet
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138:interference fit
93:difficulties in
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177:Fully floating
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165:needle bearing
161:sleeve bearing
157:electroplating
150:connecting rod
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114:Design options
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65:connecting rod
40:inside piston.
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861:Other systems
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798:and induction
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472:Dual ignition
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384:Cylinder head
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333:piston engine
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148:method.) The
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133:Semi-floating
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30:
19:
888:Recoil start
847:Turbocharger
842:Supercharger
708:Single-blade
618:Valve timing
439:Sleeve valve
424:Poppet valve
399:Main bearing
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253:
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219:
128:
117:
83:
56:
49:
43:
29:
832:Intercooler
758:Hobbs meter
683:Blade pitch
678:Autofeather
671:Terminology
578:Monosoupape
538:Dead centre
511:Terminology
419:Piston ring
389:Gudgeon pin
95:lubrication
903:Categories
822:Gascolator
812:Carburetor
763:Tachometer
645:Components
637:Propellers
553:Horsepower
518:Air-cooled
497:Spark plug
462:Alternator
455:components
453:Electrical
434:Rocker arm
374:Crankshaft
352:components
350:Mechanical
201:References
55:(English,
18:Piston pin
482:Generator
153:small end
146:set screw
140:with the
73:crosshead
786:Throttle
703:Scimitar
409:Oil pump
379:Cylinder
369:Crankpin
359:Camshaft
330:Aircraft
189:See also
182:circlips
90:hardness
80:Overview
38:gudgeons
662:Spinner
502:Starter
492:Magneto
429:Pushrod
263:5276931
142:journal
107:bending
63:to the
51:gudgeon
800:system
603:Stroke
444:Tappet
414:Piston
289:
261:
230:
86:forged
61:piston
48:, the
807:Avgas
743:EICAS
284:p. 34
224:p. 28
103:shear
69:steam
796:Fuel
738:EFIS
528:Bore
287:ISBN
259:OCLC
228:ISBN
105:and
163:or
53:pin
44:In
905::
271:^
226:,
209:^
322:e
315:t
308:v
265:.
20:)
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