Fuel Returnless System; Fuel Tank - Toyota 1NZ-FE User Manual

EG-18

2. Fuel Returnless System

This system is used to reduce the evaporative emission. As shown below, integrating the fuel filter, pressure
regulator, fuel sender gauge, and fuel cutoff valve with module fuel pump assembly enables to discontinue
the return of fuel from the engine area and prevent temperature rise inside the fuel tank.
Fuel Cutoff Valve
Fuel Filter
Fuel Pump

3. Fuel Tank

Low permeability has been realized through the use of the multi-layered plastic fuel tank. This fuel tank
consists of six layers using four types of materials.
Fuel Tank Outside
Fuel Tank Inside
ENGINE - 1NZ-FE ENGINE
To Canister
Injector
Pulsation
Damper
Pressure Regulator
Fuel Tank
Module
Fuel Pump
Assembly
HDPE (High Density Polyethylene)
Regrind Material
Adhesive
EVOH (Ethylene Vinyl Alcohol Copolymer)
Adhesive
HDPE (High Density Polyethylene)
Delivery Pipe
179EG11
00REG13Y