| 词条 | Continental O-300 | ||||||||||||||
| 释义 |
The Continental O-300 and the C145 are a family of air-cooled flat-6 aircraft piston engines built by Teledyne Continental Motors.[1] First produced in 1947, versions were still in production {{As of|2004|lc=on}}. It was produced under licence in the United Kingdom by Rolls-Royce in the 1960s. DevelopmentThe C-145 was developed from the {{convert|125|hp|kW|0|abbr=on}} C-125 engine. Both powerplants share the same crankcase, although the C-145 produces an additional {{convert|20|hp|kW|abbr=on}} through a longer piston stroke, higher compression ratio of 7.0:1 and different carburetor jetting.[1] The O-300 is a modernized C-145 and retains the same weight, dimensions, bore, stroke, compression ratio, displacement and output power of the earlier engine.[1] GO-300The GO-300 employs a reduction gearbox, so that the engine turns at 3200 rpm to produce a propeller rpm of 2400. The GO-300 produces {{convert|175|hp|kW|0|abbr=on}} whereas the ungeared O-300 produces {{convert|145|hp|kW|0|abbr=on}}.[1] The GO-300 engine has a TBO (Time Between Overhaul) of only 1200 hours, while 1800 hours is the standard for ungeared O-300 engines. The GO-300 engine also suffered reliability problems as a result of pilots mishandling the engine and operating it at too low an engine rpm. This caused the Cessna Skylark to develop a poor reputation for engine reliability. Many Skylarks flying today have been converted to different, larger-displacement, direct-drive engines.[2] Variants
Six-cylinder, {{convert|145|hp|kW|0|abbr=on}}, direct-drive engine.[1]
Modernized C145, {{convert|145|hp|kW|0|abbr=on}}, direct drive engine.[1]
Limited production for the Beagle B.218X twin that never went into production[3]
Geared O-300, {{convert|175|hp|kW|0|abbr=on}} at 3200 crankshaft rpm, 2400 propeller rpm.[1]
Liquid-cooled, fuel-injected version developing {{convert|170|hp|kW|0|abbr=on}} at 2,700 rpm.
ApplicationsO-300
GO-300
Voyager 300
Specifications (O-300)Reference: Engines for Homebuilt Aircraft & Ultralights[1]{{pistonspecs| |type=6-cylinder air-cooled horizontally opposed aircraft piston engine |bore=4 {{frac|1|16}} in (4.0625 in resp. 103.12 mm) |stroke=3 {{frac|7|8}} in (3.875 in resp. 98.425 mm) |displacement=301.4 in³ (4.94 L) |length= 39.75 in (101.0 cm) |diameter= |width=31.5 in (80.0 cm) |height=23.25 in (59.0 cm) |weight=268 lbs (121.5 kg) dry, without starter or generator |valvetrain= |supercharger= |turbocharger= |fuelsystem= |fueltype= |oilsystem= |coolingsystem=Air-cooled |power= 145 hp (108 kW) at 2,700 rpm |specpower=0.58 hp/in³ (26.5 kW/l) |compression=7.0:1 |fuelcon= |specfuelcon= |oilcon= |power/weight=0.54 hp/lb (0.89 kW/kg) }} See also{{aircontent|see also= |related= |similar aircraft= |lists=
|similar engines= }} References{{Commons category}}1. ^1 2 3 4 5 6 7 Christy, Joe: Engines for Homebuilt Aircraft & Ultralights, pages 60-63. TAB Books, 1983. {{ISBN|0-8306-2347-7}} {{Continental aeroengines}}{{US military piston aeroengines}}2. ^{{cite web|url = http://www.planeandpilotmag.com/aircraft/pilot-reports/cessna/a-lark-that-wont-quit.html?start=1|title = A Lark That Won’t Quit|accessdate = 2008-12-19|last = Perdue|first = Scott|authorlink = |year = n.d.}} 3. ^[https://www.flightglobal.com/pdfarchive/view/1963/1963%20-%200419.html Flight Global, 21 March 1963, p. 399] 4. ^{{cite web|url = http://www.wingsoverkansas.com/features/article.asp?id=461|title = The Cessnas that got away|accessdate = 2008-12-22|last = Murphy|first = Daryl|authorlink = |year = 2006}} 3 : Boxer engines|Aircraft piston engines 1940–1949|Continental aircraft engines |
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