Hybrid Drives

A number of leading authorities around the globe are striving to lower emissions at the nation’s ports and demolish technical barriers for hybrid terminal tractors to become commercially viable. Kalmar is contributing to this initiative by not only supplying units but also providing the research and development required to implement the machines with the new technology.

The fundamental objective is to move the nation’s supply chain closer to a cleaner, fuel-efficient and cost-effective future.  This will begin by equipping the hybrid vehicles with a unique hydraulic hybrid power train that can generate, recover, store and reuse braking power with very little air pollution.
Kalmar are deveoping terminal tractors that will use a diesel-hydraulic system combining the cleanest available diesel engine technology with components that use hydraulic fluid compression to store energy. The hybrid technology is expected to improve the vehicles’ fuel efficiency by 50 to 60 percent, reduce or eliminate emissions during idling, and decrease brake wear.

Says Kalmar’s Stefan Johansson, Vice President R&D, Trailer Handling: “The decision to develop hybrid terminal tractor technology reflects our commitment to cleaner operations. Kalmar is at the forefront of R&D when it comes to environment-conscious products, which makes us the ideal partner to provide terminal tractor product expertise to this initiative.”

In ongoing development testing, three Kalmar terminal tractors have been equipped with a hybrid-electric system and a hybrid-hydraulic system.  The results are expected to reduce emissions by 93 percent, which equates to 19 tons of nitrogen oxide and 200 pounds of particulate matter.

 

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