Abstract: A permeation resistant polymer fuel tank having a multilayer wall that includes a structural layer and a vapor barrier layer. A secondary barrier layer is attached to the multilayer wall wherein the vapor barrier layer and the second barrier layer have a permeation rate less than the structural layer. A protective coating may be applied over the secondary barrier layer to add durability and prevent degradation of the secondary barrier layer from environmental hazards that fuel tanks may be exposed to.

Abstract: A motor-driven feedback mechanism for a braking pedal. A pedal is linked to a shaft and a bi-directional motor capable of operating in a first and a second direction is linked to the shaft. A gearbox is driven by the bi-directional motor and the gearbox is attached to the shaft to effect rotation of the pedal. A motor controller is linked to the motor and a microprocessor capable of controlling the motor controller is linked to the motor controller. At least one sensor for measuring a parameter of the pedal and providing feedback to the microprocessor is provided.

Abstract: An engine cooling system and method applicable to a diesel engine in a vehicle. A control module, via a single multi-port valve, controls the coolant flow through a radiator, heater and oil cooler based upon engine operating conditions.