|Canter Eco Hybrid|
Mitsubishi Fuso is showing to US buyers a parallel-hybrid diesel-electric commercial truck that delivers up to 30% better fuel economy in urban delivery applications (up to 10% on-highway) and up to 60% less emissions than the standard diesel-only model.
Mitsubishi Fuso will introduce the Canter Eco Hybrid—shown as a prototype at the Tokyo Motor Show in 2002—to the Japanese commercial truck market later this year, and is showing the prototype in the US to gauge interest. Mitsubishi-Fuso, owned 85% by DaimlerChrysler, last month announced a cooperative project with fellow DaimlerChrysler truck brand Sterling Trucks for Sterling to market a version of the conventional Canter in the US: the Sterling 360.
The Canter Eco Hybrid system combines a 3.0-liter, four-cylinder inline diesel engine; an ultra-slim electric motor/generator installed between an automatic clutch (for disengaging the engine from the driveline) a high-efficiency automated mechanical transmission; and a 1.9kWh Li-ion battery pack consisting of 96 cells connected in series.
|Cutaway view of engine, motor and transmission.|
The 92 kW (123 hp) 4M42T turbocharged diesel engine is the same one utilized in conventional medium-duty truck service in Japan for several years. The ultra-slim 35kW (47 hp) brushless permanent-magnet synchronous electric motor/generator has been field-proven in a number of applications. And the Mitsubishi Fuso Inomat II automated mechanical transmission is similar to the ones that have been used in Fuso Class 8 trucks for a decade.
The hybrid system switches its operational mode according to the driving situation. The electric motor is used to drive the vehicle when starting off. During hard acceleration, both the diesel engine and electric motor/generator power the vehicle. When cruising, the vehicle is driven by the diesel engine only, like a conventional vehicle.
When slowing down or braking, the electric motor/generator functions as a generator to brake the vehicle and use regenerative braking to recharge the Li-ion battery pack.
|Operating modes. Click to enlarge.|
Mitsubishi Technical Review: Development of High-Performance Lithium-Ion Batteries for Hybrid Electric Vehicles