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Volkswagen air-cooled engine

From Wikipedia, the free encyclopedia

Volkswagen Boxer Engine
Overview
ManufacturerVolkswagen
Production1936–2006
Layout
ConfigurationFlat-4 naturally aspirated petrol engine
Displacement1.0 L (985 cc)
1.1 L (1,131 cc)
1.2 L (1,192 cc)
1.3 L (1,285 cc)
1.5 L (1,493 cc)
1.6 L (1,584 cc)
1.7 L (1,679 cc)
1.8 L (1,795 cc)
2.0 L (1,971 cc)
Cylinder bore70 mm (2.76 in)
75 mm (2.95 in)
77 mm (3.03 in)
83 mm (3.27 in)
85.5 mm (3.37 in)
90 mm (3.54 in)
93 mm (3.66 in)
94 mm (3.70 in)
Piston stroke64 mm (2.52 in)
69 mm (2.72 in)
66 mm (2.60 in)
71 mm (2.80 in)
Chronology
SuccessorVolkswagen Wasserboxer engine

The Volkswagen air-cooled engine is an air-cooled, gasoline-fuelled, boxer engine with four horizontally opposed cast-iron cylinders, cast aluminum alloy cylinder heads and pistons, magnesium-alloy crankcase, and forged steel crankshaft and connecting rods.

There are two distinct families/variations of the aircooled engine namely Type 1 and Type 4. The Type 3 engine is a variation of the Type 1 engine with pancake cooling arrangement.

Variations of the engine were produced by Volkswagen plants worldwide from 1936 until 2006 for use in Volkswagen's own vehicles, notably the Type 1 (Beetle), Type 2 (bus, transporter), Type 3, and Type 4. Additionally, the engines were widely used in industrial, light aircraft and kit car applications.

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Transcription

Type 1: 1.0–1.6 litres

1200

Volkswagen Typ 1200[1]
Overview
Also called1200 Engine
Production1950–1991
Layout
Displacement1,192 cc (72.7 cu in)
Cylinder bore77 mm (3.03 in)
Piston stroke64 mm (2.52 in)
Compression ratio7.0:1 – 7.3:1
Combustion
Fuel systemCarburettor
Solex 28 PCI or Solex 28 PICT
Fuel typeCarburettor fuel
86 RON (7:1 compression ratio)
87 RON (7,3:1 compression ratio)
Output
Power output22 kW (30 PS; 30 bhp)
25 kW (34 PS; 34 bhp)
27 kW (37 PS; 36 bhp)
30 kW (41 PS; 40 bhp)
Specific power18.5–21.0 kW (25–29 PS; 25–28 bhp) / L
Torque outputdepending on engine application, around ~70–80 N·m

The 1.2-litre engine is called Typ 122 and has a displacement of 1,192 cc (72.7 cu in).[1] As industrial engine, its rated power is 22.8 kW (31 PS; 31 bhp) at 3000 min−1 without a governor, the highest torque 81.4 N⋅m (60 lbf⋅ft) at 2000 min−1. With a governor set to 8% accuracy, the rated power is 21.33 kW (29 bhp; 29 PS) at 3000 min−1, the highest torque is 69.63 N⋅m (51 lbf⋅ft) at 2000 min−1.[2] For other applications, the power and torque output may vary, e.g. On the Beetle produced 41 PS (40 bhp; 30 kW) at 3900 rpm and 88 N⋅m (65 lbf⋅ft) of torque at 2400 rpm.[3]

Type 4: 1.7–2.0 litres

From 1968 to 1983, the Type 4 engine was produced in 1.7, 1.8 and 2.0 litre variants.[4]

Other applications

Beginning in 1987, Dunn-Right Incorporated of Anderson, South Carolina has made a kit to perform the conversion of a VW engine to a compressor.[5]

Industrial

Volkswagen AG has officially offered these air-cooled boxer engines for use in industrial applications since 1950, lately under its Volkswagen Industrial Motor brand. Available in 18 kilowatts (24 PS; 24 bhp), 22 kilowatts (30 PS; 30 bhp), 25 kilowatts (34 PS; 34 bhp), 31 kilowatts (42 PS; 42 bhp), 33 kilowatts (45 PS; 44 bhp) and 46 kilowatts (63 PS; 62 bhp) outputs, from displacements of 1.2 litres (73 cu in) to 1.8 litres (110 cu in), these Industrial air-cooled engines were officially discontinued in 1991.[citation needed]

Aircraft

AeroConversions AeroVee Engine

The air-cooled opposed four-cylinder Beetle engines have been used for other purposes as well. Limbach Flugmotoren has since 1970 produced more than 6000 certified aircraft engines based on the Beetle engine.[6][7][8][9] Sauer has since 1987 produced certified engines for small airplanes and motorgliders,[10] and is now also producing engines for the ultralight community in Europe.[11][12]

Especially interesting is its use as an experimental aircraft engine. This type of VW engine deployment started separately in Europe and in the US. In Europe this started in France straight after the Second World War using the engine in the Volkswagen Kübelwagen that were abandoned by the thousands in the country side[13] and peaked with the JPX engine.[14] In the US this started in the 1960s when VW Beetle started to show up there.[13] A number of companies still produce aero engines that are Volkswagen Beetle engine derivatives: Limbach, Sauer, Hapi, Revmaster, Great Plains Type 1 Front Drive, Hummel, the AeroConversions AeroVee Engine, and others. Kit planes or plans built experimental aircraft were specifically designed to utilize these engines. The VW air-cooled engine does not require an expensive and often complex gear reduction unit to utilize a propeller at efficient cruise RPM. With its relative low cost and parts availability, many experimental aircraft are designed around the VW engines.[15][16]

Formula V Air Racing uses aircraft designed to get maximum performance out of a VW powered aircraft resulting in race speeds above 160 mph.[17]

Some aircraft that use the VW engine are:

Volkswagen air-cooled engine installed in an Evans VP-1 Volksplane

Half VW

Half Volkswagen engine mounted in a Hummel Bird

For aircraft use, a number of experimenters, who were seeking a small, two-cylinder, four-stroke engine, began cutting Type 1 VW engine blocks in half, creating a two-cylinder, horizontally opposed engine. The resulting engine produces 30 to 38 hp (22 to 28 kW). Plans and kits have been made available for these conversions.[18][19]

One such conversion is the Carr Twin, designed by Dave Carr, introduced in January 1975, in the Experimental Aircraft Association's Sport Aviation magazine. The design won the John Livingston Award for its outstanding contribution to low cost flying and also was awarded the Stan Dzik Memorial Award for outstanding design.[19]

Other examples include the Total Engine Concepts MM CB-40 and Better Half VW.

Some aircraft that use the Half VW engine are:

References

  1. ^ a b Die Betriebsanleitung für den Volkswagen-Industriemotor Typ 122, Typ 126A. Volkswagen AG. Wolfsburg. March 1985. Page 29
  2. ^ Änderungen nach August 1965. Nachtrag zur Betriebsanleitung des Industriemotors. August 1966
  3. ^ "1963 Volkswagen Beetle Technical Specifications and Dimensions". conceptcarz. Retrieved 29 October 2018.
  4. ^ "VW Type 4 engine (1968-1983)". motor-car.net. Retrieved 17 June 2023.
  5. ^ "Dunn-Right Incorporated". Dunn-Right Incorporated. n.d. Retrieved 16 January 2010.
  6. ^ [1], Limbach L2400
  7. ^ [2], Limbach L2000
  8. ^ [3], Limbach L1700
  9. ^ Limbach, Limbach Aero Engines
  10. ^ Carat motorglider, Carat motorglider.
  11. ^ Sauer Flugmotorenbau, Sauer Flugmotorenbau.
  12. ^ Sauer in Groppo Archived 16 April 2014 at the Wayback Machine, Sauer in Groppo.
  13. ^ a b EAA Webinar John Monnett, John Monnett.
  14. ^ JPX, JPX
  15. ^ "In North Kitsap, Turning Old Cars into New Planes". Kitsap Sun. 29 November 2009.
  16. ^ Great Plans Aircraft Newsletter, Issue 3, 2010.
  17. ^ Formula V Air Racing
  18. ^ Millholland, L. E., and Graeme Gibson (November 2002). "The Better Half VW Engine – Engine Detail". Retrieved 26 May 2010.{{cite web}}: CS1 maint: multiple names: authors list (link)
  19. ^ a b Great Plains Aircraft Supply Co., Inc. (n.d.). "0058 / Carr Twin Plans". Retrieved 16 February 2022.
This page was last edited on 17 June 2024, at 08:34
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