The "Ship in a Bottle" fuel tank is a manufacturing design developed by TI Automotive in Rastatt, Germany wherein all fuel delivery components including the pump, control electronics and most hosing are encased within a blow-molded plastic fuel tank, and named after the traditional ship-in-a-bottle mechanical puzzle. The technique was developed to reduce fuel vapor emissions in response to Partial Zero-Emission Vehicle (PZEV) requirements. The first application was for the 2005 Ford GT.
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Ship in a Bottle fuel tank Wikipedia(Text) CC BY-SA