The D10 engine was in November 2003 replaced by the D9 engine in A25D and A30D. The New D9 engine is a 9,4 litre engine (to be compared with 9,6 litre on the D10) derived from the same cutting edge technology as the well-proven D12 used in A35D and A40D. The D9 engine metUS (EPA) step 2, California (CARB) step 2 and Europe (EU) step 2. With this new engine the products were prepared for coming emission standards and requirements for Tier 3.
In order to meet the Tier 3 / Stage IIIA legislation concerning exhaust emissions, a new version of the Volvo D9 engine was developed for A25D–A30D.
Volvo Advanced Combustions Technology, V-ACT, was introduced on the new D9 engine. The new D9B engine met US (EPA) Tier 3, California (CARB) Tier 3 and Europe (EU) stage IIIA emission standards.
The D9B engine was implemented on the US market in November 2005 and the EU market started from January 2006. A Tier 2/Step II compliant D9A engine continued to be available for selected markets.
|Engine||Volvo D9B AC E3|
|Rated output at, r/s (r/min)||31,7 (1 900)|
|...SAE J1349 gross, kW (hp)||252 (343)|
|...SAE J1349 net, kW (hp)||251 (341)|
|Max torque at, r/s (r/min)||20 (1 200)|
|...SAE J1349 gross, Nm||1 700|
|...SAE J1349 net, Nm||1 689|
|Max speed, km/h||53|
|Load capacity SAE struck, m3||13,6|
|Load capacity SAE 2:1 heap, m3||17,5|
|Net weight, t||23,1|
|Gross weight, t||51,1|