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Our Customers

DFM

 

A Jacobs engine brake is featured as optional equipment on the Tienlong truck. Jacobs and Dongfeng have had a good, longstanding relationship, dating back to the Model 615s, an old RVI product.

Jacobs developed the JVS Model 615 Compression Release and Exhaust Brake Synergy for DFL dCi 11Diesel Engine. The Model 615 engine retarder (Jake Brake®) works on the Compression Release principle, actuating on a single exhaust valve and is an Exhaust Cam operated  “Cross Motion” System. Model 615 is used in combination with the exhaust brake.

Jacobs continues ongoing development of new products with Dongfeng.

Our Story

Although the Jacobs Engine Brake has been on the market since 1961, the need for it was terrifyingly demonstrated to its inventor Clessie L. Cummins, some thirty years earlier. In August of 1931, himself, Ford Moyer, and Dave Evans driving a Cummins diesel powered Indiana truck from New York to Los Angeles...

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Featured Technology

HPD

High Power Density (HPD)

The Jacobs’ Two-stroke Engine Brake for High Power Density Engines realizes up to 1.5 times the available braking performance of a conventional compression release engine brake.

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