Volvo Buses is releasing a new Volvo B13R chassis fitted with a 13-litre engine that is not only has more powerful but also more fuel efficient than its predecessorAs Australia makes the transition to tougher Euro 5 exhaust emission standards, Volvo Buses is now taking the step of replacing the previous 12-litre engine with the 13-litre Volvo D13C, which will be fitted to the new three-axle Volvo B13R coach chassis.
The Volvo D13C is the same basic engine that has been used by Volvo Trucks for several years and its now one of the world’s most-sold heavy diesel engines.
Volvo Trucks’ experience shows that the Volvo D13C is an engine with robust technology and very high reliability.
Volvo Buses’ new engine is a straight six-cylinder diesel engine with turbo and intercooler. It has a one-piece cylinder head, overhead camshaft, four valves per cylinder and electronically controlled unit injectors, which ensures excellent fuel efficiency.
The powerful engine will be offered in both 420hp and 460hp versions, and has more torque than its predecessor. The 420hp engine has 2100 Nm at 1,100-1,400rpm, while the 460hp engine has 2,300 Nm at 1,050-1,400rpm.
Despite the higher displacement, Volvo engineers have successfully reduced the engine’s weight by about 80 kilograms compared with the 12-litre engine. The combination of lower weight and higher torque provides the opportunity for a higher average speed, further increasing cost-efficiency.
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