Empresa Martín SA, a privately owned public transportation company belonging to Madrid-based Grupo Ruiz, has presented ten buses powered by Compressed Natural Gas (CNG) with Magnus.E bodywork from Castrosua and on Scania K-280 UB 4 × 2 chassis.
The 12.8 meter, low-entry buses have 39 seats, a space for wheelchairs and capacity for 33 people standing. With the incorporation of these ten units, 80% of the Martín Company fleet of a total of 114 buses is now powered by compressed natural gas, with the average age of the fleet being 4.8 years.
The new Castrosua Magnus.E Euro VI-rated units are presented on a SCANIA K-280 UB 4×2 chassis and will reduce noise by up to 50% and CO2 by 20% compared to a Euro 6 bus powered by diesel. Each bus is fitted with a 1,500 liter CNG tank.
The investment in the ten vehicles is EUR 2.83 million (USD 3.15 million). With these new additions, Empresa Martín, SA is once again at the forefront of new technologies and the use of environmentally friendly and less polluting fuels.
Scania OC9 Engine
The new buses are fitted with Scania natural gas OC9 280 hp engines for urban environments. The OC09 was introduced into the new truck generation in a partly-updated version late in 2017. Early on, Scania brought out engines that ran on biogas or natural gas and complied with Euro 6. These are Scania’s well known five-cylinder inline 9-litre engines, which operate on the Otto principle and can be run on all types of vehicle gas. In characteristic Scania style they have an unusually high torque for the engine type, which makes them useful in a number of different applications.
As gas engines are generally quieter than diesel engines, they also work well in sensitive urban environments for different forms of distribution or maintenance applications, especially at night. Scania is offering its 9-litre gas engine in two power levels for Euro 6 – 280 or 340 horsepower.
Using natural gas reduces CO2 emissions by 15-20 percent, while the use of biomethane gas can result in a CO2 reduction of up to 95 percent. But regardless of the type of gas used, the drivability of Scania’s gas engines is in line with what conventional diesel engines can offer in terms of torque and power.