OM 602

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Mbstar.jpg
Daimler-Benz
DB OM 601.jpg
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)