MAZDA has developed a new vehicle idling system
that can improve fuel economy by about 10% in congested traffic.
Other innovative features are a cylinder idling system
to minimise engine pumping losses in regenerative braking, a nitrogen oxides-absorbative catalytic converter that allows lean air-fuel mixtures without the penalty of high NOx emissions, and an automatic idle stop which cuts the engine during complete stops and uses the motor to restart the engine.
Because engine braking would decrease the efficiency of the generator, there is what is known as the VTEC Cylinder Idling System
, which closes the intake and exhaust valves on as many as three of the four cylinders, thereby permitting the pistons to move more freely in the cylinders, reducing engine drag for improved generator efficiency.
All three machines feature an automatic idling system
that reduces engine speed when the levers and pedals are not activated--aiding fuel efficiency and lowering external noise, The larger EC480D features mechanical variable width tracks, which extend the width by 6 inches and raise clearance by 8 inches, aiding stability and protection.
A four-cylinder 70-hp Kubota diesel engine and an auto idling system
contribute to significant reduction in noise and fuel consumption.