72:
Air is pulled into the device when the moving scrolls are at their furthest from the fixed scrolls, leaving a large gap. As the shaft rotates the gap closes, and the point of widest opening rotates to a point further "into" the charger. As the process continues the gap eventually ends up on the
114:. Launched first as a limited batch of about 500 cars in 1987, most were sold to Volkswagen workers. A normal production version of the G40 was launched as part of the Mk2F range. The name comes from the "G" shape of its compression channels. It was mounted on a 1,272
69:. A pair of fixed scrolls supported by the end walls of the compressor chamber are interleaved with the moving scrolls. Rather than rotating, the displacer is driven in an orbital motion to create a pumping action between the pairs of scrolls.
37:. It is a compromise between the more rugged rotating lobe, and the more efficient sliding vane type superchargers, and is considered to offer the highest potential in regard to efficiency, noise and pressure fluctuation.
20:
An animation of the operation of a scroll-type supercharger. Air is confined between the two spirals and is compressed as it is forced towards the centre. In automotive application, the spirals would have far fewer
73:
middle of the housing, at the point where the higher pressure air exhausts into the engine. The scrolls are shaped so the gap slowly decreases in size as it moves to the centre, thereby compressing the air.
76:
The edges of the scrolls are sealed by strip-type seals, while the supercharger's main shaft bearings use radial seals to prevent the charge air from becoming contaminated with oil.
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57:
techniques available at the time. This type of supercharger has not seen widespread use in the aviation role, but has been used on a small number of automotive applications.
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The moving parts of the supercharger is a disc-shaped displacer with identical spirals (or scrolls) projecting from each side, and manufactured from light alloy to reduce
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to get rid of the heat produced during compression, and therefore help increase the density of the charged air.
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of France in 1905, originally for aircraft use, though Creux did consider it as a possible form of
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during the early 1990s, and was also available in limited numbers in the
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The "40" and "60" denote the displacer scroll width in millimetres.
53:. However, Creux's supercharger failed due to the relatively poor
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The basic concept of the scroll-type supercharger was invented by
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The most common and well known scroll-type supercharger is the
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155:All supercharger types benefit from the use of an
33:used as a positive displacement orbiting-spiral
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282:(in German). Die G-Laderseite.de. 1998–2009
331:
317:
309:
280:"G-Lader Arbeitsweise (G-Lader Function)"
191:. Society of Automotive Engineers. 2000.
397:Crankcase ventilation system (PCV valve)
189:Fuel Cell Power for Transportation, 2001
295:"www.G-Lader.info (Volkswagen G-Lader)"
213:"Patent number: 801182 "ROTARY ENGINE""
180:
7:
248:Light and Heavy Vehicle Technology
14:
149:when it was introduced in 1989.
147:International Engine of the Year
106:for use in a version of the Mk2
499:Overhead valve (pushrod) layout
1:
297:(in German). www.G-Lader.info
1004:
340:Internal combustion engine
957:
808:Diesel particulate filter
760:Idle air control actuator
701:Engine control unit (ECU)
346:
873:Viscous fan (fan clutch)
785:Throttle position sensor
494:Overhead camshaft layout
133:became available in the
27:scroll-type supercharger
412:Core plug (freeze plug)
129:A similar, but larger
22:
252:Butterworth-Heinemann
246:Nunney, M.J. (2006).
19:
653:Compression ignition
803:Catalytic converter
929:Knocking / pinging
521:Combustion chamber
135:Volkswagen Corrado
80:Volkswagen G-Lader
23:
975:
974:
944:Stratified charge
711:Electrical system
693:Engine management
526:Compression ratio
466:Starter ring gear
365:rotating assembly
169:Scroll compressor
139:Volkswagen Passat
31:scroll compressor
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818:Exhaust manifold
683:Spark plug wires
569:Boost controller
556:Forced induction
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145:. The G60 won
143:Volkswagen Golf
102:), designed by
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261:0-7506-8037-7
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124:petrol engine
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858:Electric fan
658:Coil-on-plug
584:Turbocharger
579:Supercharger
451:Main bearing
441:Firing order
431:Displacement
377:Block heater
361:Engine block
349:Part of the
348:
299:. Retrieved
284:. Retrieved
247:
241:
230:. Retrieved
219:
207:
188:
183:
154:
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128:
99:
91:
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51:steam engine
44:
35:supercharger
26:
24:
882:Lubrication
846:Air cooling
663:Distributor
615:Fuel filter
593:Fuel system
574:Intercooler
541:Timing belt
531:Head gasket
461:Piston ring
157:intercooler
118:(77.6
110:called the
61:Description
934:Power band
894:Oil filter
868:Thermostat
813:EGT sensor
775:MAF sensor
770:MAP sensor
755:Air filter
719:Alternator
678:Spark plug
610:Carburetor
536:Rocker arm
476:Valvetrain
407:Crankshaft
351:Automobile
301:2009-07-01
286:2008-02-09
273:References
250:. Oxford:
232:2008-02-09
120:cu in
104:Volkswagen
47:Léon Creux
668:Glow plug
630:Fuel tank
625:Fuel pump
392:Crankcase
982:Category
967:Category
912:Dry sump
908:Wet sump
899:Oil pump
863:Radiator
780:Throttle
640:Ignition
511:Camshaft
436:Flywheel
417:Cylinder
402:Crankpin
163:See also
939:Redline
823:Muffler
724:Battery
648:Magneto
100:charger
87:G-Lader
67:inertia
55:casting
41:History
962:Portal
750:Airbox
729:Dynamo
456:Piston
446:Stroke
425:layout
353:series
258:
228:. 1905
195:
112:GT G40
96:German
21:turns.
922:Other
546:Valve
516:Chest
216:(PDF)
175:Notes
92:Lader
29:is a
904:Sump
421:bank
382:Bore
256:ISBN
193:ISBN
141:and
108:Polo
98:for
25:The
889:Oil
478:and
363:and
131:G60
94:is
984::
910:,
423:,
254:.
224:.
218:.
122:)
116:cc
914:)
906:(
427:)
419:(
332:e
325:t
318:v
304:.
289:.
264:.
235:.
201:.
90:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
