OM 602

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Daimler-Benz
Damler-Benz OM 601
1985 - 2002
Diesel
Forkammermotor
Motor	OM 602 D 25									OM 602 D 25 A			OM 602 D 29					OM 602 DE 29 LA
602.xxx	911	911	911	912	912	912	930	931	939	961	961	962	940	940	942	946	947	980	982	983	984	985
Utførelse			Katalysator			Katalysator
Ytelse (HK)	90	94	90	90	94	90	84	94	92	122	126	126	95	98	95	95	98	122	129	120	122	122
Turtall o/min	4600												3800		4000			3800	4000	3800
Vekt tørr (Kg)	Kg	Kg	Kg	Kg	Kg	Kg	Kg	Kg	Kg	Kg	Kg	Kg
Dreiemoment (Nm)	154	156	154		156	154		158		225	231		192					280	300	280
Byggeår	1985 - 1989	1989 - 1993	1990 - 1993	1985 - 1989	1989 - 1993	1990 - 1993	1987 - 1992	1990 - 1992	1992 - 2000	1986 - 1988	1988 - 1993	1988 - 1996
Sylindre	R5
Innsprøytning	Forkammer
Slagvolum	2497 cm³												2874 cm³
Borring	84 mm												92,4 mm
Slag	87 mm												89 mm
Kompresjon	22:1
Turbo	Nei									Ja			Nei					Ja
Ladeluftkjøler	Nei																	Ja
Kjøling	Vann
Innsug åpner	- før ØD
Innsug stenger	- etter ND
Eksos åpner	- før ØD
Eksos stenger	- etter ND
Klaring innsug	mm - kald
Klaring eksos	mm - kald
Tenningsrekkefølge
Dieselpumpe
Dysespiss
Dieselfilter
Oljefilter
Stempelhastighet	m/s
Stempelprodusent
Startmotor

production=1985 to 2002 successor = OM612

The successor of the OM 617 engine family was the newly developed straight-5 Diesel automobile engine OM 602 from Mercedes-Benz used from 1980s up to 2002. With some Mercedes-Benz 250D/E250D diesels exceeding 500,000 or 1,000,000 miles, it's considered to be the one of the most reliable engines ever produced, a success which is only comparable with the famous OM617 engine.

The 5-cylinder OM602 was succeeded by the four valve engine OM605 (E250D 20V) and later the OM612 and OM647 with turbo charger and Common Rail Direct Injection (C/E/ML 270CDI).

The engine

The Mercedes OM602 engine is a 5 cylinder diesel engine of 2497cc. The engine was also increased in capacity to 2874cc (2.9L) and used in the Phase 1 Mercedes Sprinter vans, the Ssangyong Musso and Korando range and even in the 1996-1999 models of the E-class. It was available in either naturally aspirated or turbocharged variants with two valves per cylinder.

The camshafts and injection pump are driven by duplex chain from the crankshaft. A separate single row chain drives the oil pump. The camshaft operated the valves via hydraulic bucket tappets; valve clearance adjustment is automatic.

On earlier models of 2497cc Fuel injection is indirect. A Bosch PES in-line injection pump is used, with a mechanical governor and vacuum-operated stop control. The pump is lubricated by a connection to the engine oil circulation and the fuel lift pump is mounted on the side of the injection pump.

The later, 2.9L capacity unit uses a Bosch VE style rotary distributor injection pump with electronic control. This larger capacity version uses direct injection.

Preheating is by glow plugs with automatic control of preheating time.

Varianter av OM 602

Model indication	År	Motorvariant	Effekt i kW (HK)
OM 602.xxx (5 sylindet diesel rekkemotor)
W201 190 2.5 D & W124 250 D	04/1985 - 06/1993	602.911, 602.912, 602.930, 602.931	66 (90) (<'89) eller 69 (94) (>'89)
G-Class 250 GD 4x4		.938 & .939
210 & 310 & 410 2,9 D.	10/1988 -> ?	.940 & .942	72 (98) eller 75 (102)
G-Class 290 GD 4x4		.946 & .947
W201 190 2.5 turbodiesel & W124 250D Turbo	01/1987 -> 1993	A.961 & A.962	90 (122) (<'88) or 92 (126) (>'88)
Sprinter 2,5 Turbo-D.		A.963
212D & 312D & 412D & Sprinter 2,9 TD.	02/1995 -> 04/2000	A.980 & A.986	90 (122)
G-Class 290 GD turbodiesel 4x4	07/1997 -> 09/2000	A.983	88 (120)
W210 E290 turbodiesel	03/1996 -> 07/1999	A.982	95 (129)