OUTLINE
The 1GR-FE engine is a V-type, 6-cylinder, 4.0-liter, 24-valve DOHC engine.
On this engine, the Electronic Throttle Control System-intelligent (ETCS-i), Variable Valve Timing-intelligent (VVT-i) and Acoustic Control Induction System (ACIS) are used. These control functions have been optimized to further improve engine performance and fuel economy, and reduce exhaust emissions.
This engine has been made compact and lightweight through the use of an aluminum cylinder block and a plastic type intake air surge tank, fuel delivery pipe and water inlet pipe.
SPECIFICATION
| No. of Cyls. and Arrangement | 6-cylinder, V-type | |||
| Valve Mechanism | 24-valve DOHC, Chain Drive (with VVT-i) | |||
| Combustion Chamber | Pentroof Type | |||
| Manifolds | Cross-flow | |||
| Fuel System | Sequential Multiport Fuel Injection (SFI) | |||
| Ignition System | Direct Ignition System (DIS) | |||
| Displacement | 3956 cm3(241.4 cu. in.) |
|||
| Bore x Stroke | 94.0 mm x 95.0 mm (3.70 in. x 3.74 in.) | |||
| Compression Ratio | 10.0 : 1 | |||
| Max. Output [SAE-NET] | 175 kW @ 5200 rpm | |||
| Max. Torque [SAE-NET] | 376 N*m @ 3800 rpm | |||
| Valve Timing | Intake | Open | 42° BTDC to -8° BTDC | |
| Closed | 10° ABDC to 60° ABDC | |||
| Exhaust | Open | 54° BBDC | ||
| Closed | 2° ATDC | |||
| Spark Plug | Manufacturer | DENSO | NGK | |
| Type | K20HR-U11 | LFR6C-11 | ||
| Plug Gap | 1.0 mm to 1.1 mm (0.0394 in. to 0.0433 in.) | |||
| Firing Order | 1 - 2 - 3 - 4 - 5 - 6 | |||
| Research Octane Number | 95 (Octane rating 91) or higher | |||
| Emission Regulation*1 | EURO 2 | |||
| EURO 4 | ||||
| Engine Service Mass (Reference)*2 | 166 kg (366 lb) | |||
*1: Emission regulations differ by country and region.
*2: Weight shows the figure with oil and coolant fully filled.
Tech Tips
Toyota allows the use of ethanol blended gasoline where the ethanol content is up to 10%. Make sure that the ethanol blended gasoline to be used has a Research Octane Number that follows the above.
MAIN FEATURES
This engine has been able to achieve the following performance features through the use of the items listed below:
A: High performance and fuel economy
B: Low noise and vibration
C: Lightweight and compact design
D: Good serviceability
E: Clean emissions
| Item | A | B | C | D | E | |
|---|---|---|---|---|---|---|
| Engine Proper | An upright intake port is used. | ○ | - | ○ | - | - |
| A taper squish shape is used for the combustion chamber. | ○ | - | - | - | ○ | |
| A steel-laminate type cylinder head gasket is used. | ○ | - | - | - | - | |
| Spiny-type liners are used in the cylinder bores. | ○ | - | ○ | - | - | |
| 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. | ○ | - | ○ | - | - |
| Shim-less type valve lifters are used. | ○ | - | ○ | - | - | |
| The Variable Valve Timing-intelligent (VVT-i) system is used. | ○ | - | - | - | ○ | |
| Lubrication System | A water-cooled type oil cooler is used. | ○ | - | - | - | - |
| Intake and Exhaust System | An intake air surge tank made of plastic is used. | - | - | ○ | - | - |
| A linkless-type throttle body is used. | - | - | ○ | ○ | - | |
| A stainless steel exhaust manifold is used. | - | - | ○ | - | ○ | |
| Three-Way Catalytic Converters (TWCs) are used. | - | - | - | - | ○ | |
| Fuel System | 12-hole type fuel injectors are used to improve the atomization of fuel. | ○ | - | - | - | ○ |
| Quick connectors are used to connect the fuel hose with the fuel pipe. | - | - | - | ○ | - | |
| Ignition System | Long-reach type spark plugs are used. | ○ | - | - | - | - |
| Serpentine Belt Drive System | A Direct Ignition System (DIS) makes ignition timing adjustment unnecessary. | - | - | ○ | ○ | - |
| Engine Control | The Electronic Throttle Control System-intelligent (ETCS-i) is used. | ○ | - | - | - | ○ |
| Flat type knock sensors are used. | ○ | - | - | - | - | |
| A no-contact sensor is used in the throttle position sensor and accelerator pedal position sensor. | ○ | - | - | - | - | |
| The use of an air fuel ratio sensor allows for precise control. | - | - | - | - | ○ | |
| The Acoustic Control Induction System (ACIS) is used. | ○ | - | - | - | ○ | |
Tech Tips
○: Available
-: Not available