Difference between revisions of "4A9x family"

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The '''4A9x family''' of engines are inline 4 cylinder engines designed by Mitsubishi. All feature an all-alloy design with double overhead camshafts, [[MIVEC]] and four valves per cylinder.
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{{Infobox engine
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| name          = 4A9x
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| image        = [[Image:4A91.jpg|250px]]
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| caption      = 4A91 in a Colt (RG)
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| manufacturer  = MDC Power<br>Shenyang Aerospace Mitsubishi Motors Engine Manufacturing
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| aka          =
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| production    = 2003 - present
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| predecessor  = [[Orion|Orion (4G1x)]]
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| successor    = 
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| configuration = Inline 4
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| displacement  =
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| bore          =
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| stroke        =
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| block        = Aluminum die-cast
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| head          = Aluminum die-cast
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| valvetrain    = Direct acting DOHC, 16 valves, continuously variable MIVEC intake valve timing
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| compression  =
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| supercharger  =
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| turbocharger  =
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| fuelsystem    =
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| management    =
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| fueltype      =
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| oilsystem    =
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| coolingsystem =
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| idle          =
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| redline      =
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| power        =
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| specpower    =
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| torque        =
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| length        =
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| width        =
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| height        =
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| diameter      =
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| weight        =
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| emissions level =
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| emissions control =
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}}
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The '''4A9x family''' was designed by Mitsubishi to replace the [[Orion]] engine in its small vehicles. Mitsubishi designed it to be lightweight, compact and powerful. All 4A9x engines feature an all-aluminium design with chain driven double overhead camshafts, four valves per cylinder (16 in total) and continuously variable [[MIVEC]] on the intake camshaft. It is the first Mitsubishi engine to use a high pressure die-cast aluminium block.
  
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The engine is built at the joint Mitsubishi-DaimlerChrysler facility - [[MDC Power]] in Germany and has been available since 2003.
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The engine has been built at the joint Mitsubishi Daimler-Chrysler facility - [[MDC Power]] in Germany since 2003 and the Shenyang Aerospace Mitsubishi Motors Engine Manufacturing Co Ltd in China since 2009.
  
 
==4A90==
 
==4A90==
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The 4G90 is a 1.3 litre engine displacing 1332cc. It has a 75.0 mm x 75.4 mm bore and stroke with a 10.5:1 compression ratio, Mitsubishi claims power figures of 70 kW at 6000 rpm and torque of 125 Nm at 4000 rpm. THe engine has seen service in non-Australian RG Mitsubishi Colts.
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===Specifications===
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{|cellpadding="3" align="left"
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|'''Displacement'''
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|1332cc (1.3 litres)
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|-
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|'''Bore'''
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|75.0mm
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|-
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|'''Stroke'''
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|75.4mm
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|-
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|'''Compression Ratio'''
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|10.5:1
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|-
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|'''Output'''
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|73 kW @ 6000 rpm, 125 Nm @ 4000 rpm
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|-
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|}
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{{Clear}}
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===Used in===
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*Smart ForFour (2004-2006)
  
 
==4A91==
 
==4A91==
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The 4G91 is a 1.5 litre engine displacing 1499cc. It has a 75.0 mm x 84.8 mm bore and stroke with a 10.0:1 compression ratio, power is claimed to be 80 kW at 6000 rpm and torque 145 Nm at 4000 rpm. It has been used in the RG Mitsubishi Colt both in Australia and overseas.
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===Specifications===
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{|cellpadding="3" align="left"
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|'''Displacement'''
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|1499cc (1.5 litres)
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|-
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|'''Bore'''
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|75.0mm
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|-
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|'''Stroke'''
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|84.8mm
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|-
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|'''Compression Ratio'''
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|10.0:1
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|-
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|'''Output'''
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|80 kW @ 6000 rpm, 145 Nm @ 4000 rpm
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|-
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|}
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{{Clear}}
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===Used In===
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*Mitsubishi [[Colt (RG)]]
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*Smart ForFour (2004-2006)
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==4A92==
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===Specifications===
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{|cellpadding="3" align="left"
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|'''Displacement'''
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|1590cc (1.6 litres)
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|-
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|'''Bore'''
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|75.0mm
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|-
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|'''Stroke'''
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|90.0mm
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|-
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|'''Compression Ratio'''
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|11.0:1
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|-
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|'''Output'''
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|86 kW @ 6000 rpm, 154 Nm @ 4000 rpm
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|-
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|}
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{{Clear}}
  
 
==Web Links==
 
==Web Links==

Latest revision as of 14:30, 13 September 2020

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