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| Manufacturer | Toyota Motor Corporation |
|---|---|
| Production | 2006– |
| Predecessor | Toyota UZ engine |
The Toyota UR engine family is a 32-valve quad-camshaft V8 piston engine series which was first introduced in 2006, starting with the 1UR-FSE engine with D-4S direct injection for the 2007 Lexus LS. The series launched with a die-cast aluminum block, aluminum heads, and magnesium cylinder covers.[1] All UR engines feature variable valve timing for both intake and exhaust cams or Dual VVT-i. Timing chains are used to drive the camshafts. The UR engine has been produced in 4.6, 5.0, and 5.7 liter displacement versions.
The UR engine replaces the previous UZ engine.
Contents |
4.6-liter
1UR-FSE
The 1UR-FSE V8 engine, introduced with the Lexus LS 460 & LS 460 L luxury sedans in 2006 has a 4.6 liter (4608cc) displacement, which it gets from a 94 mm (4 in) bore and 83 mm (3 in) stroke. The engine includes D4-S direct injection and dual VVT-iE producing 385 hp (287 kW) at 6,400 RPM and 51 kg·m (500 N·m; 369 ft·lbf) at 4,100 RPM.
1UR-FSE undergoes X-ray inspection and a CT (Computed Tomography) scan to ensure minimal deformation after the die-casting process. Camshafts are hollow to minimize weight.[2]
Applications:
1UR-FE
The 1UR-FE is based on the 1UR-FSE but lacks the D4-S direct injection technology. The engine produces 347 hp (259 kW) at 6,400 RPM and 46.9 kg·m (460 N·m; 339 ft·lbf) at 4,100 RPM. Due to this power deficit compared to the 1UR-FSE the Middle East market LS 460 (equipped with the 1UR-FE) is 0.6 second slower than the 1UR-FSE equipped variant in 0-100 km/h acceleration, at 6.3 s.
Applications:
- 2007 Lexus LS 460 & LS 460 L (Middle East)
- 2008 Lexus GS 460
- 2010 Lexus GX 460
- 2010 Toyota Tundra
- 2010 Toyota Sequoia
5.0-liter
2UR-GSE
The 2UR-GSE is a 5.0 liter (4969 cc) engine and powers the Lexus IS-F. It has D-4S gasoline direct injection, Dual VVT-i, and VVT-iE on the intake cam. Bore of 94 mm (4 in) and stroke of 89.5 mm (4 in), it will produce 423 PS (311 kW; 417 hp) at 6,600 RPM and 51.5 kg·m (505 N·m; 373 ft·lbf) at 5,200 RPM.
Applications:
2UR-FSE
The 2UR-FSE is a 5.0 liter (4969 cc) engine and powers the Lexus LS600h. It has D4-S gasoline direct injection, Dual VVT-i, and VVT-iE on the intake cam. It has the same bore and stroke as the 2UR-GSE, but produces 394 hp (294 kW) at 6,400 RPM and 53 kg·m (520 N·m; 383 ft·lbf) at 4,000 RPM. The electric motors (Lexus Hybrid Drive) in the system add extra power into the drivetrain, allowing the combination to deliver 327 kilowatts (439 hp) in total.
The engine's cylinder heads are made from a magnesium alloy, while like other UR blocks it is die-cast to save weight.[3]
Applications:
5.7-liter
3UR-FE
The 3UR-FE is a 5.7-liter (5663 cc) engine designed for use in Toyota trucks, and as a result, the D-4S gasoline direct injection will not be included, but Dual VVT-i is included. Bore of 94 mm (4 in) and stroke of 102 mm (4 in), it produces 381 hp (283 kW) at 5,600 rpm and 401 ft·lbf (543 N·m)of torque at 3,600 rpm. A stainless steel exhaust manifold incorporating a 3-way catalytic converter is used. This engine is cast at Toyota's Bodine Aluminum and currently assembled at Toyota Motor Manufacturing Alabama. Over 1.3 million kilometers of durability testing have gone into the engine. E85 ethanol capability will be included for the 2009 model year.[4] The engine's service weight is 222 kg.
Available bolt-on Toyota Racing Development Eaton's Twin Vortices Series Roots-type supercharger kit for the Tundra and Sequoia bumps power to 504 hp and 550 ft-lbf of torque.
Applications:
- 2007 Toyota Tundra
- 2008 Toyota Sequoia
- 2008 Toyota Land Cruiser 200 Series - US market only
- 2008 Lexus LX 570
Footnotes
- ^ Vasilash, Gary (2006). "Lexus Comes Into Its Own". Automotive Design & Production. http://www.autofieldguide.com/articles/090601.html. Retrieved 2007-05-06.
- ^ http://www.pressroom.com.au/press_kit_detail.asp?clientID=3&navSectionID=13&categoryID=1000&kitID=222
- ^ Society of Automotive Engineers
- ^ Tundra CrewMax Reveal at 2007 North American International Auto Show
http://www.toyota.co.jp/en/tech/environment/powertrain/engine/engine2.html
See also
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