Bobcat’s new E42, E45, E50 and E55 (pictured) Tier IV excavators include a non-diesel particulate filter (DPF) engine solution. These four medium-sized M-Series machines provide operators with all of the same performance benefits of the previous interim Tier IV models. The machines also feature a new forward-mount instrumentation system, as well as cold-weather protection: Anytime the engine temperature is too low, the loader will temporarily limit the maximum engine speed (rpm) to prevent premature component wear or failure. Engine idle speed is also raised slightly to help the engine reach its operating temperature faster. As soon as the engine warms up to a predetermined temperature, the protection mechanism will deactivate.
