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Scania launches second-generation Euro 6 engines with even lower fuel consumption

Scania is offering Australian customers the opportunity to order Euro 6 specification engines that offer even lower exhaust emissions.

Scania unveiled a range of second-generation Euro 6 compliant engines in Europe in time for the launch of the Streamline models.

In Australia, a brace of second-generation Euro 6 engines are now available to special order, should customers demand them.

These second-generation Euro 6 engines are available in 450 hp and 490 hp power outputs and provide fuel consumption savings of up to 2% compared with the first generation Euro 6 engines sold in Europe over the past year.

The Euro 6 emission standard calls for a fine balance between the combustion and after treatment processes. Scania is using its vast experience of both EGR and SCR to implement an optimal technical solution for each output level, as well as for individual applications.

Europe implements the Euro 6 standard on 1st January 2014. There is no date yet announced for the implementation of this standard in Australia. However, Scania Australia is making these engines available to order now so that operators who seek the cleanest possible engine solutions can be supplied by one of the industry’s leaders.

The Scania 6-cylinder 450 hp and 490 hp engines are based on further refinements of the Euro 6 specification 440 and 480 hp units, which have been proven in the hands of operators since early 2011. The 450 hp engine is available in R-, G- and P-series and the 490 hp unit in R- and G-series trucks.

The new Euro 6 engines offer the following levels of performance for Australian operators:

450 hp, 2,350 Nm at 1,000-1,300 rpm, EGR+SCR

490 hp, 2,550 Nm at 1,000-1,300 rpm, EGR+SCR

Compared with the first-generation Euro 6 engines (which were not supplied in Australia), the 450 hp and 490 hp engines have been further developed with a revised engine management system, and a revised intake system that maintains sufficiently high exhaust temperatures without the need for an intake throttle. The exhaust brake is rated at 256 kW at 2,400 rpm.

In addition, a new disengaging air compressor is being introduced across the Euro 6 engine range.

The compressor has a pneumatically controlled coupling that disengages when the compressor is idling, contributing to a fuel saving of up to 1%, depending on operation.

Scania suggests that Euro 6 trucks specified for long-distance freight haulage should generally be specified for highway cruising at less than 1,200 rpm in order to minimise fuel consumption. The high torque delivered from low revs in combination with automated gear changing means that the low cruising revs save fuel without requiring extra attention from the driver.

Testing by Scania has revealed that Scania's second-generation Euro 6 engines are 2% more economical than the first ones.

For applications where engines seldom run at full load, Scania recommends that customers consider selecting a slightly lower engine output than for Euro 5.

Working the engine a little harder will benefit efficiency, since a high exhaust temperature can be maintained more easily.

If the exhaust temperature is getting too low, extra fuel will be burnt to keep the after treatment system working properly.

Similarly, leaving the engine idling will risk cooling down the after treatment system.

“Scania is making these two Euro 6 engines available now in Australia because we know there are some operators who would like to access the most advanced and cleanest engine technology available,” says Roger McCarthy, Managing Director of Scania Australia.

“Some customers are undertaking a very broad range of emissions reductions activities across their businesses, and this extends to their transportation and logistics operations.

“The clean Euro 6 engines are also very frugal with fuel, showing a notable reduction in consumption over the first generation Euro 6 engines. Scania continues to work hard for its customers, by researching ways to cut fuel use, which leads to lower running costs.

“Scania has taken a strong and progressive position on Euro 6 internationally, and we are very keen to replicate this in Australia,” he says.

“The company has developed a full range of Euro 6 engines across all configurations, but in the first instance we are making two 6-cylinder engines available locally.

“If there is demand for further configurations we will act to meet this demand,” Roger says.