Volvo D12D Service Information

Document Title:

Engine, description

Profile:
ART, A35E, A35E FS [GB]
Engine, description
D12D is a straight six-cylinder, four-stroke, turbocharged diesel engine with direct injection and intercooler, as well as wet,
replaceable cylinder liners. The engine is equipped to meet governing legislation according to Tier 3/stage IIIA for exhaust
emissions.
D12D uses V-ACT (Volvo Advanced Combustion Technology) and gas split inspection, optimized air handling, and
turbocharger with wastegate. Electronically controlled IEGR (Internal Exhaust Gas Recirculation) lowers the content of NOX
and reduces emissions without aftertreatment of exhausts. All electronic functions in the engine are controlled by Volvo's
engine management system EMS2.
Cylinders are numbered in sequence beginning farthest from at the flywheel. Firing order: 1-5-3-6-2-4. The engine's
rotational direction is counter-clockwise seen from the flywheel.
Figure 1

Cylinder orientation

Engine identification

Identification plate 1
Engine designation, serial number, part number and assembly plant are stamped in one field on the engine block's left rear
edge
Identification plate 2
A decal with the software's ID-number, the engine's serial number and assembly plant is located on the valve cover to
ensure installation of correct ECU on the engine in production. On the back of the ECU, there is a decal indicating its
hardware number.

Assembly plants:

A = Skövde, Sweden
E = Curitiba, Brazil
F = Flen, Sweden
L = Lyon, France
Identification plate 3
The certification decal is located on the valve cover as well as on the machine frame.
Function Group:
200
Information Type:
Service Information
Service Information
Date:
2014/8/27