In addition to these higher ratings, a new feature called Wide Operating Speed Range (WOSR) is available for some applications on Caterpillar 3512B and 3516B engines, allowing customers more flexibility in how the engines are operated. WOSR performance is achieved by using a nominal 1,600 rpm rated engine but allowing power to be maintained at a very high level out to 1,800rpm in the governor overrun curve.

The end result is a flat-line constant power curve from approximately 1,200 rpm to 1,800 rpm with impressive torque rise and power reserve for acceleration.

All of the new power options have been made available following a process of joint collaboration between Caterpillar and two of its key Dutch customers, dredging giant Royal Boskalis Westminster and the prolific builders of tugs and other workboats, Damen Shipyards at Gorinchem. Both companies approached Caterpillar with specific but different application related requirements for more power from the Cat 3500 engine family. And both companies, as well as defining the challenge and their requirements, also offered collaborative input towards achieving their goals. Caterpillar has achieved the increased power output options through a revised approach to turbocharger matching on the engines, a new high tech injector spray pattern and modifications to electronic control and engine speed options.

MJ Information No: 18348