Abstract
Exhaust and evaporative emissions systems have been developed to match the characteristics and usage of THS II plug-in hybrid vehicle (PHV). Based on a conventional hybrid vehicle, The PHV features an additional external charging function, which allows it to be driven as an electric vehicle (EV) in urban areas, and as an hybrid vehicle (HV) in high-speed/high-load and long-distance driving situations.
To reduce exhaust emissions, the conventional catalyst warm up control has been enhanced to achieve emissions performance that satisfies Super Ultra Low Emissions Vehicle (SULEV) standards in California in every state of battery charge. In addition, a heat insulating fuel vapor containment system (FVS) has been developed using a plastic fuel tank based on the assumption that such a system can reduce the diffusion of vapor inside the fuel tank and the release of fuel vapor into the atmosphere to the maximum possible extent.
