63:. There is no coating applied to the cylinder bore and blocks are not honed conventionally. During the manufacturing process, a chemical or mechanical process is used to remove aluminum from the surface of the cylinder bore, exposing a very hard silicon precipitate. These exposed silicon particles, which under a microscope look like small islands, allow for oil to collect in the area surrounding them, thus forming the required tribofilm that supports piston and ring travel.
81:
a resin binder. During the casting process, the molten aluminum is injected into the mold and burns off the resin, leaving an area of localized hypereutectic aluminum only in the area of the cylinder bore. The silicon particles are then mechanically exposed in a similar process to an Alusil block resulting in a cylinder block that functions in the same way as one cast out of Alusil.
84:
Although successfully used by many
European manufacturers, there are potentially issues associated with engines that use Alusil blocks, namely cylinder bore scoring which occurs when there is a breakdown of the exposed silicon particles in the cylinder bore, resulting in increased oil consumption and
80:
Although similar, Alusil is not to be mistaken with
Lokasil which was used by Porsche in the Boxster, Cayman, and 911 models from 1997 through 2008. Lokasil blocks use a freeze cast cylinder sleeve pre-form which is inserted into the casting mold. This preform contains silicon particles suspended in
66:
The pistons used in an Alusil engine block typically have an iron-clad plating or similar coating on the piston skirts to prevent galling of the aluminum pistons when run against the uncoated aluminum cylinder bore. Examples of this coating include Mahle
Ferrostan (I & II), FerroTec, or
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36:(EN AC-AlSi17Cu4Mg / EN AC-48100 or A390) contains approximately 78% aluminium and 17% silicon. This alloy was theoretically conceived in 1927 by
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77:-coated cylinder walls to Alusil in 1996 to eliminate the corrosion problems caused through the use of petrol/gasoline containing sulfur.
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in the same year, for its car engines. It was further developed by
Reynolds, now
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508:"Latest machining techniques for aluminium cylinder bores (Alusil and Lokasil)"
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49:
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48:. In the United States, Chevrolet was the first to use Reynolds A390 in the
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303:"ALUSIL - Cylinder Blocks for the new Audi V6 and V8 SI engines"
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594:"KS Aluminium-Technologie: engine blocks for the new Audi A6"
33:
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478:"High-performance engine blocks for tomorrow's challenges"
403:. Baden-Baden: Ernst Koelblin. pp. 49, 80, 185, 375.
70:
574:"Understanding Bore Scoring in Al-Si Cylinder Systems"
620:"High-tech products for the new and advanced BMW V12"
372:. Rheinmetall-Detec.de. January 2006. Archived from
55:
The Alusil aluminium alloy is commonly used to make
366:"Rheinmetall's tradition of automotive excellence"
1715:
484:. KSPG-AG.com. 12 September 2005. Archived from
416:Pionieri dell'automobile. Lancia, Bazzi, Ferrari
529:. MAHLE GmbH. Wiesbaden: Vieweg+Teubner. 2012.
329:
327:
626:. KSPG-AG.com. 10 January 2003. Archived from
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655:- official website of Alusil trademark holder
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88:Vehicles / Engines using Alusil include:
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600:. Rheinmetall.de. August 2004
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418:. Modena (IT): Il Fiorino.
397:AddreĂźbuch Baden-Baden 1926
310:KS Aluminium-Technologie AG
271:
10:
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526:Pistons and engine testing
38:Schweizer & Fehrenbach
1678:Aluminium–scandium alloys
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624:Kolbenschmidt Pierburg AG
572:Navarro, Charles (2019).
482:Kolbenschmidt Pierburg AG
335:"What is Alusil coating?"
197:Mercedes-Benz M113 engine
191:Mercedes-Benz M112 engine
1734:Aluminium–silicon alloys
1582:Aluminium–lithium alloys
85:excessive piston noise.
440:"REYNOLDS 390 and A390"
653:Kolbenschmidt Pierburg
557:: CS1 maint: others (
456:10.31399/asm.ad.al0203
46:Rheinmetall Automotive
16:Aluminum-silicon alloy
414:Manicardi N. (2014).
1693:Hypereutectic piston
714:History of aluminium
376:on 25 September 2006
278:Hypereutectic piston
370:Rheinmetall Defence
261:Porsche Panamera V8
258:Porsche Panamera V6
1729:1927 introductions
1612:Aluminium granules
726:1000 series (pure)
1711:
1710:
1639:(aka R.R. alloys)
536:978-3-8348-8662-0
450:(8). 1971-08-01.
425:978-88-7549-464-3
339:finishing dot com
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1724:Aluminium alloys
1698:Aluminium bronze
1673:Nickel aluminide
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630:on 2012-02-27
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488:on 2012-02-27
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24:hypereutectic
21:
1616:
1575:Named alloys
697:Introduction
632:. Retrieved
628:the original
623:
614:
602:. Retrieved
597:
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525:
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490:. Retrieved
486:the original
481:
472:
447:
444:Alloy Digest
443:
434:
415:
409:
396:
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378:. Retrieved
374:the original
369:
343:. Retrieved
338:
314:. Retrieved
309:
230:Porsche 924S
87:
83:
79:
69:
67:Ferroprint.
65:
54:
19:
18:
1643:Hydronalium
1622:Birmabright
1507:8000 series
1380:7000 series
1241:6000 series
1127:5000 series
1078:4000 series
1029:3000 series
850:2000 series
244:Porsche 968
238:Porsche 944
224:Porsche 928
168:BMW M70/M73
120:5.2 FSI V10
1718:Categories
1637:Hiduminium
634:13 January
604:13 January
492:13 January
345:13 January
316:13 January
284:References
126:Volkswagen
114:4.2 FSI V8
108:3.2 FSI V6
102:4.2 MPI V8
1668:MKM steel
1658:Magnalium
1632:Duralumin
704:Aluminium
553:cite book
545:831115179
464:0002-614X
187:M Engines
57:linerless
27:aluminium
1703:AlSi10Mg
1239:Al-Mg-Si
272:See also
1683:Y alloy
1587:AlBeMet
1509:(misc.)
174:BMW N74
162:BMW N63
156:BMW N62
148:BMW S62
140:BMW M62
134:BMW N52
129:6.0 W12
75:Nikasil
31:silicon
1648:Italma
1617:Alusil
1607:Alumel
1597:Alnico
1592:Alclad
543:
533:
462:
422:
380:23 May
183:&
96:2.4 V6
42:Lancia
20:Alusil
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