FEATURES OF 3UR-FE ENGINE
The 3UR-FE engine has achieved the following performance through the use of the items listed below.
(1) High performance and reliability
(2) Low noise and vibration
(3) Lightweight and compact design
(4) Good serviceability
(5) Clean emissions and fuel economy
| Item | (1) | (2) | (3) | (4) | (5) | |
| Engine Proper | A taper squish shape is used for the combustion chamber. | ○ | - | - | - | ○ |
| An aluminum alloy cylinder block containing a water distribution pathway is used. | ○ | - | ○ | - | - | |
| Spiny-type liners are used in the cylinder bores. | ○ | - | ○ | - | - | |
| Water jacket spacers are used. | ○ | - | - | - | - | |
| The piston skirt is coated with resin. | ○ | ○ | - | - | ○ | |
| A No.1 oil pan made of aluminum alloy is used. | ○ | ○ | ○ | - | - | |
| Valve Mechanism | Timing chains and chain tensioners are used. | ○ | - | ○ | - | - |
| Hydraulic lash adjusters are used. | ○ | ○ | - | ○ | ○ | |
| Roller rocker arms are used. | ○ | - | - | - | ○ | |
| Lubrication System | An oil filter with a replaceable element is used. | - | - | - | ○ | - |
| A water-cooled type oil cooler is used. | ○ | - | - | - | - | |
| Cooling System | TOYOTA Genuine Super Long Life Coolant (SLLC) is used. | - | - | - | ○ | - |
| Intake and Exhaust System | A link-less type throttle body is used. | ○ | - | ○ | - | - |
| An intake manifold made of plastic is used. | ○ | - | ○ | - | - | |
| Stainless steel exhaust manifolds are used. | ○ | - | ○ | - | ○ | |
| Ceramic type Three-Way Catalytic converters (TWCs) are used. | - | - | - | - | ○ | |
| Fuel System | 12-hole type fuel injectors are used to improve the atomization of fuel. | ○ | - | - | - | ○ |
| Ignition System | The Direct Ignition System (DIS) makes ignition timing adjustment unnecessary. | ○ | - | - | ○ | ○ |
| Long-reach type iridium-tipped spark plugs are used. | ○ | - | ○ | ○ | ||
| Charging System | A segment conductor type generator is used. | ○ | - | ○ | - | - |
| Starting System | A planetary reduction type starter is used. | - | - | ○ | - | - |
| Serpentine Belt Drive System | A serpentine belt drive system is used. | - | - | ○ | ○ | - |
| Blowby Gas Ventilation System | A separator case is provided between the cylinder block and the intake manifold. | ○ | - | - | - | ○ |
| Engine Control System | Magnetic Resistance Element (MRE) type crank position, cam position, and VVT sensors are used. | ○ | - | - | - | - |
| The Electronic Throttle Control System- intelligent (ETCS-i) is used. | ○ | - | - | - | ○ | |
| The dual Variable Valve Timing-intelligent (VVT-i) system is used. | ○ | - | - | - | ○ | |
| The Acoustic Control Induction System (ACIS) is used. | ○ | - | - | - | ○ | |
| The starter control (cranking hold function) is used. | ○ | - | - | - | - | |
| An evaporative emission control system is used. | - | - | - | - | ○ | |