What is eVaptive?
eVaptive is an electronically controlled vapor venting system that transmits fuel vapors to a charcoal canister while keeping liquid fuel confined to the fuel tank. For any given fuel tank application, the system can be optimized for all driving situations as well as stationary and refueling modes. The hardware is a “one-size-fits-all” unit that can be programmed to fit any vehicle platform, eliminating the need for OEMs to design unique venting systems for different vehicles.
How it Works
In a traditional fuel tank design, and according to OEM requirements, optimal vapor venting positions are determined in the vapor space at the top of the tank. Once these vent points are determined, Eaton’s eVaptive™ Electronic Venting System vent positions can be located there. Any liquid fuel that enters the vent tubes is routed to a central liquid trap, where it is pumped back into the fuel tank. Once vapor is routed to the charcoal canister for absorption.
The actuator system is controlled by a computer algoithm that controls the fuel level during refueling. It also is used to mitigate the spit-back that sometimes occurs when filing the tank to full volume.