Ford Cyclone engine

Ford Cyclone engine

Manufacturer	Ford Motor Company
Also called	Duratec 35 Duratec 37 Mazda MZI EcoBoost
Production	2006–present
Predecessor	Ford Mondeo V6
Displacement	213 CID (3496 cc) 227 CID (3721 cc)
Cylinder bore	3.64 in (92.5 mm) 3.76 in (95.5 mm)
Piston stroke	3.41 in (86.7 mm)
Cylinder block alloy	Aluminum
Cylinder head alloy	Aluminum
Valvetrain	DOHC with Direct Acting Mechanical Buckets

The Cyclone engine is Ford Motor Company's latest DOHC V6 family of gasoline engines.^[1] It will gradually replace the Mondeo family of V6 engines over the next several years. The first version, a 3.5 L Duratec V6, appeared in September 2006 in the Lincoln MKZ. Mazda badges its versions of the Cyclone MZI as it did with its versions of the Mondeo V6.

Notable Cyclone features include a capacity for displacements ranging up to 4.0 L,^[1] DOHC 4-valve per cylinder heads, direct acting mechanical bucket (DAMB) camshaft tappets, variable cam timing (iVCT) on the intake camshafts, and twin-independent variable cam timing (Ti-VCT) on some later versions. Features such as Gasoline direct injection and turbocharging were considerations in the design phase and have been added to the engine as part of EcoBoost. The Duratec 35 is ULEV-II compliant and is capable of meeting the PZEV requirement.

Duratec 35

The Duratec 35 displaces 3.5 L (3496 cc, 213 CID) with a 92.5 mm (3.64 in) bore and 86.7 mm (3.41 in) stroke. Due to packaging differences (primarily the relocation of the water pump to the valley), the 3.5 L engine will fit into any engine bay the smaller Mondeo 3.0 L will, and replaced it in some applications (notably the Ford Taurus) in the 2008 model year. Production began in 2006 for the Ford Edge, Lincoln MKX, and Lincoln MKZ. Ford expects the engine to be available in 20% of its vehicles by the end of the decade.

Official SAE certified engine output is 265 hp (198 kW) and 250 lb·ft (339 N·m) on 87 octane gas. This is a substantial upgrade in power from the Duratec 30 and bested all comparable 87 octane rated V6 engines at the time of its launch.^[2] For 2011, the 3.5 L received Ti-VCT, helping to boost output to 285 hp (213 kW) and 253 lb·ft (343 N·m).^[3]

The engine is assembled at Lima Engine in Lima, Ohio, with expansion planned in Cleveland Engine Plant #1.

The Duratec 35 was on the Ward's 10 Best Engines list for 2007.

The 3.5 L Duratec 35 installed in a 2007 Lincoln MKZ

Applications

• 265 hp (198 kW) at 6250 rpm and 250 lb·ft (339 N·m) at 4500 rpm
  • 2007–2010 Ford Edge
  • 2007–2010 Lincoln MKX
• 263 hp (196 kW) at 6250 rpm and 249 lb·ft (338 N·m) at 4500 rpm
  • 2007–present Lincoln MKZ
  • 2007 Mazda CX-9 (MZI)
  • 2008–present Ford Taurus
  • 2008–2009 Ford Taurus X
  • 2008–2009 Mercury Sable
  • 2010 Ford Fusion Sport
• 262 hp (195 kW) at 6250 rpm and 248 lb·ft (336 N·m) at 4500 rpm
  • 2009–present Ford Flex
• Ti-VCT 285 hp (213 kW) at 6500 rpm and 253 lb·ft (343 N·m) at 4000 rpm
  • 2011 Ford Edge
• Ti-VCT 290 hp (216 kW) and 255 lb·ft (346 N·m)
  • 2011 Ford Explorer

Duratec 37

The Duratec 37 is a 3.7 L (3721 cc/227 CID) version of the Cyclone V6 intended to power heavier or premium vehicles. The Duratec 37's additional displacement comes from an increase in bore diameter to 95.5 mm (3.76 in), stroke remains identical to the Duratec 35s at 86.7 mm (3.41 in).

A Hiroshima, Japan assembled Mazda MZI 3.7 was installed in the 2008 Mazda CX-9 and was the first 3.7 L Cyclone V6 to see production. The first Duratec 37 saw production in the 2009 Lincoln MKS.

A few days before the 2009 Los Angeles International Auto Show, Ford unveiled a new version of the Duratec 37 for the 2011 Mustang, making it the first Duratec-badged V6 since the Lincoln LS to be used in a production rear-wheel drive car. This version of the 3.7 L features Twin Independent Variable Cam Timing (Ti-VCT); delivers 31 mpg_-US (7.6 L/100 km; 37 mpg_-imp) highway mileage in the Mustang, and was the first production engine to deliver in excess of 300 hp (224 kW) and 30 MPG.^[4]

Applications

• 273 hp (204 kW) at 6250 rpm and 270 lb·ft (366 N·m) at 4250 rpm
  • 2008–present Mazda CX-9 (MZI)
• 272 hp (203 kW) at 6250 rpm and 269 lb·ft (365 N·m) at 4250 rpm
  • 2009–present Mazda 6 (MZI)
• 275 hp (205 kW) at 6250 rpm and 276 lb·ft (374 N·m) at 4250 rpm
  • 2009 Lincoln MKS
• 268 hp (200 kW) at 6250 rpm and 267 lb·ft (362 N·m) at 4250 rpm
  • 2010 Lincoln MKT
• Ti-VCT 302 hp (225 kW) at 6500 rpm and 278 lb·ft (377 N·m) at 4000 rpm
  • 2011 Ford F-150 ^[5]
• Ti-VCT 305 hp (227 kW) at 6500 rpm and 280 lb·ft (380 N·m) at 4250 rpm
  • 2011 Ford Mustang
  • 2011 Lincoln MKX^[6]
  • 2011 Ford Edge Sport

EcoBoost

Main article: Ford EcoBoost engine

It is a twin turbocharged, gasoline direct injected (GTDI) version of the Duratec 35.

See also

• Ford Duratec engine
• List of Ford engines

External links

• 3.5L press release: Media.Ford.com - 12 Apr. 2006
• TwinForce Press release: Media.Ford.com - 7 Jan. 2007
• TwinForce information from Media.Ford.com - 9 Jan. 2007

References

1. ^ ^{a b} Whitfield, Kermit (2003). "Ford's next step in engine manufacturing". Automotive Design & Production. http://findarticles.com/p/articles/mi_m0KJI/is_10_115/ai_n6010896. 
2. ^ "Ford's new V-6 catches up to competitors". Detroit News. http://www.detnews.com/apps/pbcs.dll/article?AID=/20060412/AUTO01/604120342/1148. Retrieved April 12, 2006. 
3. ^ http://media.ford.com/article_display.cfm?article_id=32009
4. ^ http://media.ford.com/article_display.cfm?article_id=32160
5. ^ http://media.ford.com/article_display.cfm?article_id=33265
6. ^ http://media.ford.com/article_display.cfm?article_id=31725