3A9x family - Revision history

Cartman02au: add proper image

2026-01-03T00:16:03Z

add proper image

← Older revision		Revision as of 00:16, 3 January 2026
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	{{Infobox engine		{{Infobox engine
	\| name = 3A9x		\| name = 3A9x
	\| image = [[Image:~~4B11_engine~~.jpg\|250px]]		\| image = [[Image:3A92.jpg\|250px]]
	\| caption =		\| caption =
	\| manufacturer = [[MDC Power]]<br>Mitsubishi		\| manufacturer = [[MDC Power]]<br>Mitsubishi

Cartman02au at 00:15, 3 January 2026

2026-01-03T00:15:36Z

← Older revision		Revision as of 00:15, 3 January 2026
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	{{Infobox engine		{{Infobox engine
	\| name = 3A9x		\| name = 3A9x
	\| image =		\| image = [[Image:4B11_engine.jpg\|250px]]
	\| caption =		\| caption =
	\| manufacturer = [[MDC Power]]<br>Mitsubishi		\| manufacturer = [[MDC Power]]<br>Mitsubishi

Cartman02au at 08:12, 2 January 2026

2026-01-02T08:12:42Z

← Older revision		Revision as of 08:12, 2 January 2026
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	\| image =		\| image =
	\| caption =		\| caption =
	\| manufacturer = MDC Power<br>Mitsubishi		\| manufacturer = [[MDC Power]]<br>Mitsubishi
	\| aka =		\| aka =
	\| production =		\| production =

Cartman02au at 08:11, 2 January 2026

2026-01-02T08:11:48Z

← Older revision		Revision as of 08:11, 2 January 2026
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			__NOTOC__
	{{Infobox engine		{{Infobox engine
	\| name = 3A9x		\| name = 3A9x
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	\| emissions control =		\| emissions control =
	}}		}}
	The '''3A9x family''' ~~are~~ three cylinder engines ~~which were~~ developed alongside the [[4A9x family]]. ~~They share many similarities with their four cylinder sibling, being~~ an all-aluminum ~~design with~~ chain driven double overhead camshafts, four valves per cylinder (12 in total~~) and continuously variable [[MIVEC]] on the intake camshaft (except for the 1.1 Litre 3A91~~).		The '''3A9x family''' is a series of compact three-cylinder engines developed alongside the four-cylinder [[4A9x family]]. These engines feature an all-aluminum construction, chain-driven double overhead camshafts (DOHC), and four valves per cylinder (12 total).

	~~The bore~~ and ~~stroke of~~ each 3A9x model is the same as ~~the~~ corresponding 4A9x ~~model~~.		==Key Features==
			*'''MIVEC (Mitsubishi Innovative Valve timing Electronic Control):''' Continuously variable valve timing is used on the intake camshaft (with the exception of the 1.1L 3A91).
			*'''Efficiency:''' Under light loads, the MIVEC system closes the inlet valves late to reduce pumping losses and improve fuel economy.
			*'''Shared Architecture:''' To streamline manufacturing, each 3A9x model shares the same bore and stroke measurements as its corresponding 4A9x sibling.
			==Characteristics==
			The 3A9x family has earned a reputation for being simple and reliable. It is not uncommon for these engines to reach over 300,000 kilometres without failure.

	~~The MIVEC used on these~~ engines ~~closes the inlet valves late under light load to reduce pumping losses~~.		Like most three-cylinder engines, they are unbalanced and produce a unique, growly exhaust note and minor vibration at idle.

	~~Initially~~ the ~~engine was built~~ at the ~~joint Mitsubishi Daimler-Chrysler facility -~~ [[MDC Power]] in Germany ~~from its release in 2003 until 2011 before production moving to~~ Mitsubishi's Kyoto facility ~~from 2012~~.		Instead of using turbochargers, the 3A9x family stays naturally aspirated keeping fuel economy remarkably consistent.

			The 3A9x family has a remarkably flat torque curve, helping them to feel capable in city traffic. Peak torque arrives relatively late (between 3,500 and 5,000 rpm), but because of the MIVEC system, about 90% of that torque is available from as low as 2,000 rpm.
			==Production==
			*'''2003–2011:''' Manufactured at the [[MDC Power]] facility in Germany (a joint venture between Mitsubishi and Daimler-Chrysler).
			*'''2012–Present:''' Production relocated to Mitsubishi’s [[Kyoto]] facility in Japan.

	==3A90==		==3A90==
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	{{Clear}}		{{Clear}}
	===Used in===		===Used in===
	[[Sixth Generation Mirage]] (non Australian market)		*[[Sixth Generation Mirage]] (non Australian market)

	==3A91==		==3A91==
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	{{Clear}}		{{Clear}}
	===Used in===		===Used in===
	[[Sixth Generation Mirage]]		*[[Sixth Generation Mirage]]

	{{Mitsubishi Engines}}		{{Mitsubishi Engines}}

	[[Category: ~~Other Mitsubishi~~ Technical]]		[[Category: Engines]]
			[[Category: Technical]]

Cartman02au at 14:07, 22 September 2020

2020-09-22T14:07:39Z

← Older revision		Revision as of 14:07, 22 September 2020
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	\|}		\|}
			{{Clear}}
	===Used in===		===Used in===
	[[Sixth Generation Mirage]] (non Australian market)		[[Sixth Generation Mirage]] (non Australian market)
	~~{{Clear}}~~

	==3A91==		==3A91==
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	\|-		\|-
	\|}		\|}
			{{Clear}}
	When used in the Smart, Mercedes refer to the engine as the M134.		When used in the Smart, Mercedes refer to the engine as the M134.
	===Used in===		===Used in===
	*Colt Z30 (European market)		*Colt Z30 (European market)
	*Smart ForFour (not in Australia)		*Smart ForFour (not in Australia)

	~~{{Clear}}~~

	==3A92==		==3A92==
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	\|-		\|-
	\|}		\|}
			{{Clear}}
	===Used in===		===Used in===
	[[Sixth Generation Mirage]]		[[Sixth Generation Mirage]]

	~~{{Clear}}~~

	{{Mitsubishi Engines}}		{{Mitsubishi Engines}}


	[[Category: Other Mitsubishi Technical]]		[[Category: Other Mitsubishi Technical]]

Cartman02au: Created page with "{{Infobox engine | name = 3A9x | image = | caption = | manufacturer = MDC Power
Mitsubishi | aka = | production = | predecessor =..."

2020-09-22T14:06:03Z

Created page with "{{Infobox engine | name = 3A9x | image = | caption = | manufacturer = MDC Power<br>Mitsubishi | aka = | production = | predecessor =..."

New page

{{Infobox engine
| name = 3A9x
| image =
| caption =
| manufacturer = MDC Power<br>Mitsubishi
| aka =
| production =
| predecessor =
| successor =
| configuration = Inline 3
| displacement =
| bore =
| stroke =
| block = Aluminum die-cast
| head = Aluminum die-cast
| valvetrain = Direct acting DOHC, 12 valves, continuously variable MIVEC intake valve timing
| compression =
| supercharger =
| turbocharger =
| fuelsystem =
| management =
| fueltype =
| oilsystem =
| coolingsystem =
| idle =
| redline =
| power =
| specpower =
| torque =
| length =
| width =
| height =
| diameter =
| weight =
| emissions level =
| emissions control =
}}
The '''3A9x family''' are three cylinder engines which were developed alongside the [[4A9x family]]. They share many similarities with their four cylinder sibling, being an all-aluminum design with chain driven double overhead camshafts, four valves per cylinder (12 in total) and continuously variable [[MIVEC]] on the intake camshaft (except for the 1.1 Litre 3A91).

The bore and stroke of each 3A9x model is the same as the corresponding 4A9x model.

The MIVEC used on these engines closes the inlet valves late under light load to reduce pumping losses.

Initially the engine was built at the joint Mitsubishi Daimler-Chrysler facility - [[MDC Power]] in Germany from its release in 2003 until 2011 before production moving to Mitsubishi's Kyoto facility from 2012.

==3A90==
===Specifications===
{|cellpadding="3" align="left"
|'''Displacement'''
|999cc (1.0 litre)
|-
|'''Bore'''
|75.0mm
|-
|'''Stroke'''
|75.4mm
|-
|'''Compression Ratio'''
|10.5:1
|-
|'''Output'''
|52 kW @ 6000 rpm, 88 Nm @ 5000 rpm
|-
|}
===Used in===
[[Sixth Generation Mirage]] (non Australian market)
{{Clear}}

==3A91==
===Specifications===
{|cellpadding="3" align="left"
|'''Displacement'''
|1124cc (1.1 litres)
|-
|'''Bore'''
|75.0mm
|-
|'''Stroke'''
|84.8mm
|-
|'''Compression Ratio'''
|10.0:1
|-
|'''Output'''
|55 kW @ 6000 rpm, 100 Nm @ 3000 rpm
|-
|}
When used in the Smart, Mercedes refer to the engine as the M134.
===Used in===
*Colt Z30 (European market)
*Smart ForFour (not in Australia)

{{Clear}}

==3A92==
===Specifications===
{|cellpadding="3" align="left"
|'''Displacement'''
|1193cc (1.2 litres)
|-
|'''Bore'''
|75.0mm
|-
|'''Stroke'''
|90.0mm
|-
|'''Compression Ratio'''
|10.5:1
|-
|'''Output'''
|57 kW @ 6000 rpm, 100 Nm @ 4000 rpm
|-
|}
===Used in===
[[Sixth Generation Mirage]]

{{Clear}}

{{Mitsubishi Engines}}

[[Category: Other Mitsubishi Technical]]