초록 ▼

A public transit vehicle is driven by a hybrid drive system including a diesel engine, a generator driven by the engine, two battery packs for storing energy from the generator and from re-generated braking energy and a transmission in the form of a motor driven by the electrical energy from the gen

A public transit vehicle is driven by a hybrid drive system including a diesel engine, a generator driven by the engine, two battery packs for storing energy from the generator and from re-generated braking energy and a transmission in the form of a motor driven by the electrical energy from the generator and/or the batteries. The drive components are mounted on a sub-frame for carrying which is arranged for readily releasable attachment to the main longitudinal beams of the vehicle body so as to be carried on the vehicle body during operation of the vehicle. The sub-frame itself is designed simply and avoiding duplication of support elements so that it is incapable of supporting by itself the radiator and the transmission which are partially supported in use by elements of the vehicle body. There is provided a movable service dolly for supporting the sub-frame with the engine components thereon and for supporting the radiator and the transmission so that the dolly and the sub-frame co-operate to support all of the engine components during servicing so that they can be removed together. The engine is arranged transverse to the longitudinal frame with the radiator to one side of the body and the generator directly driven at the rear end of the engine and the motor/transmission in front of the engine. The battery packs are arranged on the roof each on a respective side and one aligned side by side with the electrical controllers for the engine system.

대표청구항 ▼

1. A combination comprising:a vehicle having: a vehicle body including structural members therein; a plurality of ground wheels mounted on the vehicle body for carrying the vehicle body in movement across the ground; an engine system including a plurality of separate engine components arranged to co

1. A combination comprising:a vehicle having: a vehicle body including structural members therein; a plurality of ground wheels mounted on the vehicle body for carrying the vehicle body in movement across the ground; an engine system including a plurality of separate engine components arranged to co-operate for driving at least two of the ground wheels for propulsion of the vehicle; a sub-frame; the sub-frame being arranged for readily releasable attachment to the vehicle body so as to be carried on the vehicle body during operation of the vehicle; the sub-frame being removable from the vehicle; the sub-frame being arranged such that, during operation of the vehicle, each of at least some of the engine components has a first part thereof supported on the sub-frame and a second part thereof supported on the vehicle body; and a movable service dolly for supporting during servicing the subframe and the engine components, the dolly including: first support elements for supporting the sub-frame with said first parts thereon when removed from the vehicle body; and second support elements for supporting said second parts when removed from the vehicle body such that the dolly and the sub-frame co-operate to support all of the engine components during servicing.