2si 540

2si 540
2si 540 & 500
Type Two-stroke aircraft engine
National origin United States
Manufacturer 2si

The 2si 540 and 2si 500 are a family of in-line twin-cylinder, liquid-cooled, two-stroke, dual ignition, aircraft engines that were designed for ultralight aircraft.[1]

The basic engine was originally designed and produced by JLO of Germany and was later acquired by the AMW Cuyuna Engine Company of Beaufort, South Carolina and marketed under the Cuyuna brand name. Later the engine was marketed by Cuyuna under the Two Stroke International (2si) brand. Cuyuna no longer markets engines for aircraft use although the 540 is still in production as a sport vehicle engine.[1][2][3]

Contents

Development

The 540 is a conventional twin-cylinder engine that weighs 90 lb (41 kg) in its L70 aircraft version. The engine features dual capacitor discharge ignition (single in the sport vehicle version), reed valve porting, tuned exhaust system, two slide venturi-type carburetors, liquid cooling, fuel pump, a cast iron cylinder liner, ball, needle and roller bearings throughout. The aircraft version was offered with an optional gearbox reduction system. Starting is electric starter or recoil starter.[1][3][4]

The 500L85 is a special engine that was developed from the 540, by reducing the cylinder bore from 75 mm (2.953 in) to 72 mm (2.835 in). This was done to reduce the displacement to under 500 cc and allow the engine to be used for Formula 500 auto racing.[3]

Variants

500L-85
Gasoline sport vehicle engine for Formula 500 auto racing. Dual carburetors, 83 hp (62 kW) at 8000 rpm, still in production.[3]
540-L70
Gasoline aircraft engine, dual carburetors, 70 hp (52 kW) at 7000 rpm, weight 90 lb (41 kg), out of production.[1][4]
540L-90
Gasoline sport vehicle engine for auto racing, kart and all-terrain vehicle applications. Dual carburetors, 89 hp (66 kW) at 8000 rpm, still in production.[3]

Applications

Aircraft
  • RagWing RW8 PT2S
Automotive

Specifications (540-L70 aircraft engine)

Data from Cliche[1] & 2si[3]

General characteristics

  • Type: Twin-cylinder, two-stroke aircraft engine
  • Bore: 75 mm (2.95 in)
  • Stroke: 61 mm (2.40 in)
  • Displacement: 540 cc (32.95 cu in)
  • Length: 17.5 in (444.50 mm)
  • Width: 14.0 in (355.60 mm)
  • Height: 15.0 in (381.00 mm)
  • Dry weight: 90 lb (41 kg)

Components

  • Valvetrain: reed valve porting
  • Fuel type: Minimum 92 octane
  • Oil system: premixed oil and fuel
  • Cooling system: liquid cooled
  • Reduction gear: optional gearbox

Performance

  • Power output: 70 hp (52 kW) at 7000 rpm

See also

References

  1. ^ a b c d e Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-2 Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4
  2. ^ Two Stroke International (undated). "2si Company Profile". http://www.2si.com/2si_company_profile.htm. Retrieved 2010-02-16. 
  3. ^ a b c d e f 2si (undated). "Engine Models 500L–85 & 540L-90 Racing/Sport Vehicle Engines". http://www.2si.com/500l_540l_sport_spec.htm. Retrieved 2010-02-18. 
  4. ^ a b Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 69. BAI Communications. ISBN 0-9636409-4-1

Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • 2si 460 — Type Two stroke aircraft engine National origin United States Manufacturer 2si The 2si 460 is a family of in line twin cylinder, two stroke, single ignition, aircraft engines that were designed for ultralight aircraft …   Wikipedia

  • 2si — Type Private company Industry Manufacturing Headquarters Beaufort, South Carolina, United States …   Wikipedia

  • 2si 215 — Type Two stroke aircraft engine National origin United States Manufacturer 2si The 2si 215 is a family of single cylinder, fan cooled, two stroke, single ignition, aircraft engines that were designed for ultralight aircraft …   Wikipedia

  • 2si 690 — Type Two stroke aircraft engine National origin United States Manufacturer 2si The 2si 690 is a family of in line three cylinder, liquid cooled, two stroke, dual ignition, aircraft engines that were designed for ultralight aircraft …   Wikipedia

  • 2si 230 — Type Two stroke aircraft engine National origin United States Manufacturer 2si The 2si 230 is a family of single cylinder, two stroke, single ignition, aircraft engines that were designed for ultralight aircraft.[ …   Wikipedia

  • 2si 808 — Type Two stroke aircraft engine National origin United States Manufacturer 2si The 2si 808 is a family of in line three cylinder, liquid cooled, two stroke, dual ignition, aircraft engines that were designed for ultralight aircraft …   Wikipedia

  • List of aircraft engines — ABC Dragonfly at the London Science Museum This is an alphabetical list of aircraft engines by manufacturer. Contents A B …   Wikipedia

  • Liste des moteurs d'avions — Maintenance sur un General Electric TF39 turbofan d un C 5 Galaxy Cet article est la liste des moteurs d avions par type et constructeur. Voir aussi la Catégorie:Moteur d aviation. Sommaire …   Wikipédia en Français

  • Lüdersdehnung — Als Streckgrenze ReS wird der Werkstoffkennwert bezeichnet, bis zu dem ein Werkstoff bei einachsiger und momentenfreier Zugbeanspruchung keine makroskopische plastische Verformung zeigt. Bei Überschreiten der Streckgrenze kehrt das Material nach… …   Deutsch Wikipedia

  • Obere Streckgrenze — Als Streckgrenze ReS wird der Werkstoffkennwert bezeichnet, bis zu dem ein Werkstoff bei einachsiger und momentenfreier Zugbeanspruchung keine makroskopische plastische Verformung zeigt. Bei Überschreiten der Streckgrenze kehrt das Material nach… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”