Difference between revisions of "Orion"

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The '''Orion''' (or '''4G1x''') family of engines are inline 4 cylinder engines which were designed by Mitsubishi to replace their [[Neptune]] (4G4x) series. All have cast iron cylinder blocks, alloy heads and overhead camshafts driven by a belt.
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{{Infobox engine
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The Orion series was first introduced in the Mitsubishi Colt in 1978. The Orion ranges from 1.2 to 1.6 Litres in capacity.  
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| name          = Orion (4G1x)
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| image        =
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| caption      =
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| manufacturer  = Mitsubishi Motors
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| aka          = Alpha (Hyundai nomenclature)
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| production    = 1977 - present
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| predecessor  = [[Neptune|Neptune (4G4x)]]
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| successor    = [[4A9x family|4A9x]]
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| configuration = Inline 4
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| displacement  =
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| bore          =
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| block        = Cast Iron
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| head          = Aluminum alloy
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| valvetrain    = SOHC/DOHC
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| compression  =
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| supercharger  =
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| turbocharger  =
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}}
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The '''Orion''' (or '''4G1x''') family of engines are inline 4 cylinder engines which were designed by Mitsubishi to replace their [[Neptune]] (4G4x) series. All have cast iron cylinder blocks, alloy heads and overhead camshafts driven by a belt. Displacement ranges from 1.2 to 1.6 Litres.
  
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As with the [[Sirius family]] Hyundai also produced and used these engines. Hyundai's name for the family was Alpha.
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The Orion series was first introduced in the Mitsubishi Colt in 1977 and production continues today earning it the distinction of being one of the longest lived Japanese engines ever produced. The engine has seen duty in a range of other makes including Hyundai (who call it the Alpha), Proton, Smart, Haval and Geely.
  
 
==4G11==
 
==4G11==
 
The 4G11 (or G11B as it is sometimes known) is a 1.2 Litre engine displacing 1244cc. It uses a 69.5x82.0mm bore and stroke and has a single overhead camshaft with two valves per cylinder. Power was claimed to be 53 kW when fitted to the first generation Mirage.
 
The 4G11 (or G11B as it is sometimes known) is a 1.2 Litre engine displacing 1244cc. It uses a 69.5x82.0mm bore and stroke and has a single overhead camshaft with two valves per cylinder. Power was claimed to be 53 kW when fitted to the first generation Mirage.
  
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The 4G11 was not widely used in Australia but saw service in the first generation Mirage and first and second generation Lancer internationally.
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The 4G11 was not widely used in Australia but saw international service in the first generation Mirage and first and second generation Lancer.
  
 
==4G12==
 
==4G12==
 
The 4G12 is a 1.4 Litre engine displacing 1410cc. It has a 74.0x82.0mm bore and stroke. The 4G12 was only available in SOHC, 2 valve per cylinder form.
 
The 4G12 is a 1.4 Litre engine displacing 1410cc. It has a 74.0x82.0mm bore and stroke. The 4G12 was only available in SOHC, 2 valve per cylinder form.
  
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In Australia the 4G12 can be found in the RA Colt.
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In Australia the 4G12 can be found in the [[Colt (RA - RE)|RA Colt]].
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===4G12 Modulated Displacement===
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In 1982, Mitsubishi developed what has been hailed as the world's first engine with cylinder deactivation technology with the 4G12 Modulated Displacement (MD). Contrary to popular belief however, Mitsubishi was the second car maker to bring the technology to market with Cadillac's L62 being released to the market for a year in 1981.
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Mitsubishi's MD deactivated cylinders 1 and 4 under light load conditions in an effort to reduce fuel consumption. It achieved this by use of an Electronic Control Unit which detects whether the engine needs to be in 2 or 4 cylinder mode, an oil pump, an oil control valve which contains a three port solenoid to control deactivation devices on the valves of cylinders 1 and 4.
  
 
==4G13==
 
==4G13==
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==4G15==
 
==4G15==
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The 4G15 is tht most common of all the Orion engines. It is a 1.5 Litre engine with a displacement of 1468cc. Its bore and stroke is 75.5x82.0mm and is avaiable in SOHC 2 valve per cylinder, SOHC 3 valve per cylinder, DOHC 3 valve per cylinder and DOHC 4 valve per cylinder forms. SOHC versions use a 9.2:1 compression ratio, while the DOHC versions use a 9.5:1 compression ratio.
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[[Image:Proton Saga 4G15.jpg|right|200px|thumb|Carbureted 4G15 in a Proton Saga]]
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[[Image:4G15 DOHC.jpg|right|200px|thumb|4G15 DOHC]]
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The 4G15 is the most common of all the Orion engines. It is a 1.5 Litre engine with a displacement of 1468cc. Its bore and stroke is 75.5x82.0mm and is avaiable in SOHC 2 valve per cylinder, SOHC 3 valve per cylinder, DOHC 3 valve per cylinder and DOHC 4 valve per cylinder forms. SOHC versions use a 9.2:1 compression ratio, while the DOHC versions use a 9.5:1 compression ratio.
  
 
The DOHC 16v version was also fitted with MIVEC and/or a turbocharger in some markets.
 
The DOHC 16v version was also fitted with MIVEC and/or a turbocharger in some markets.
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This engine was also used by Hyundai, the SOHC 8v version being labelled either G4AJ or G4DJ; the SOHC 12v version being called G4EK; the DOHC 12v version being called G4FK; and the DOHC 16v being designated G4EC.
 
This engine was also used by Hyundai, the SOHC 8v version being labelled either G4AJ or G4DJ; the SOHC 12v version being called G4EK; the DOHC 12v version being called G4FK; and the DOHC 16v being designated G4EC.
 
===4G15 SOHC 8v===
 
===4G15 SOHC 8v===
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In Australia,, the 8 valve SOHC 4G15 was fitted to the Mitsubishi CA Lancer Hyundai Excel X1 and X2.
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In Australia,, the 8 valve SOHC 4G15 was fitted to the Mitsubishi CA Lancer, Hyundai Excel X1 and X2.
  
 
===4G15 SOHC 12v===
 
===4G15 SOHC 12v===
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===4G15 DOHC 16v===
 
===4G15 DOHC 16v===
 
In Australia, the 16 valve DOHC 4G15 was used in the Hyundai Accent and Kia Rio.
 
In Australia, the 16 valve DOHC 4G15 was used in the Hyundai Accent and Kia Rio.
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===4G15 DOHC 16v MIVEC===
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In Australia the 16 valve DOHC 4G15 was used in the Mitsubishi [[Colt (RG)|Colt RG]] in 2004 and 2005where it produced 72kW @ 6,000 rpm and 132Nm @ 4,250 rpm.
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===4G15 DOHC 16v MIVEC Turbo===
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In Australia the 16 valve DOHC Turbo 4G15 was used in the Mitsubishi [[Colt (RG)|Colt RG]] Ralliart where it produced 113kW @ 6,000 rpm and 210Nm @ 3,500 rpm and the [[Colt (RZ)|Colt RZ Cabriolet]] Turbo where it output the same torque but 3kW less power.
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{{clear}}
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==4G17==
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The 4G17 is a 1.3 Litre engine with SOHC and 3 valves per cylinder (two intake, one exhaust). It displaces 1343cc and uses a 72.2mm x 82mm bore and stroke.
  
 
==4G18==
 
==4G18==
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In Australia the 4G18 was used in the Proton Waja.
 
In Australia the 4G18 was used in the Proton Waja.
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==4G19==
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[[Image:2003 Mitsubishi Colt 4G19 engine 1.jpg|left|200px|thumb|4G19 as used in a 2003 Mitsubishi Colt]]Mitsubishi introduced the 4G19 in 2002 to power the seventh generation [[Colt (RG)|Colt]] (in markets other than Australia). The 1.3 Litre engine featured DOHC with 4 valves per cylinder and MIVEC. It outputs 66 kW at 5600 rpm and 121 Nm at 4250 rpm.
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The 4G19 displaces 1343cc and uses a 75.5mm x 75mm bore and stroke.
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{{clear}}
  
 
==G4ED==
 
==G4ED==
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{{Mitsubishi Engines}}
 
{{Mitsubishi Engines}}
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[[Category: Other Mitsubishi Technical]]
 
[[Category: Other Mitsubishi Technical]]

Latest revision as of 14:25, 13 September 2020

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