FEATURES OF 1UR-FE ENGINE
This engine has been able to achieve the following performance features 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. | ○ | - | ○ | - | - | |
| Cylinder block 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. | ○ | - | ○ | - | - |
| Valve lash adjuster assemblies are used. | ○ | ○ | - | ○ | ○ | |
| Valve rocker arm sub-assemblies 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 linkless-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 injector assemblies 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 | A magnetic Resistance Element (MRE) type crank position, a 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. | ○ | - | - | - | ○ | |
| An air injection control is used.* | - | - | - | - | ○ | |
| A starter control (cranking hold function) is used. | ○ | - | - | - | - | |
| An evaporative emission control system is used. | - | - | - | - | ○ | |
*: Models with air injection control