Jacobs Vehicle Systems has announced an optimized engine brake for the 2017 Cummins X15 engine designed to add additional braking power from the engine compared to past models. Jacobs Vehicle Systems ...

Jacobs Vehicle Systems announced the introduction of the optimized engine brake for the 2017 Cummins X15 engine. “The 2017 X15 capitalizes on the optimization of the VGT and the braking cam to deliver ...

Jacobs’ optimized engine brake for the 15-liter 2017 Cummins X15 engine is designed to capitalize on the optimization of the VGT and braking cam to deliver 10 percent additional braking power at ...

X15 diesels showed quick throttle response and strong acceleration on the TRC's tracks. Engine brakes were impressively strong, even at low rpm's. A parade of X15-powered tractor-trailers led the ...