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Ford Cyclone engine

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Ford Cyclone engine

Manufacturer	Ford Motor Company
Also called:	Duratec 35 Duratec 37 Mazda MZI
Type:	60° V6
Production:	2006 – present
Predecessor:	Ford Mondeo V6
Bore:	3.64 in (92.5 mm) – 3.76 in (95.5 mm)
Stroke:	3.41 in (86.7 mm)
Displacement:	213 in³ (3496 cc) – 227 in³ (3721 cc)
Block alloy:	Aluminum
Head alloy:	Aluminum
Valvetrain:	DOHC

The Cyclone engine is Ford Motor Company's latest gasoline powered DOHC 60° V6 family of 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 35 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, ^[2] centrally-located sparkplugs, pent-roof combustion chambers, direct acting mechanical bucket (DAMB) camshaft tappets, and variable cam timing (VCT) on the intake camshafts. Features such as gasoline direct injection, turbocharging, dual-stage variable length intake manifold and VCT on the exhaust camshafts are planned to be added later and were considerations in the design phase. The Duratec 35 is ULEV-II compliant and is capable of meeting the PZEV requirement. The Duratec 35 was on the Ward's 10 Best Engines list for 2007.

1 Duratec 35
2 Duratec 37
- 2.1 Current applications:
- 2.2 Future applications:
3 TwinForce
4 See also
5 References
- 5.1 Notes

Duratec 35

Official SAE certified engine output is 265 hp (Expression error: Unrecognised punctuation character "{" kW) and 250 ft·lbf (Expression error: Unrecognised punctuation character "{" N·m) on 87 octane gas, but will exceed 300 hp (Expression error: Unrecognised punctuation character "{" kW) once planned features such as gasoline direct injection (GDI), twin independent variable cam timing (TiVCT), and a variable geometry intake manifold are added. 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. ^[3]. The recommended engine oil is 5W-20. The 3.5 L engine is the same exterior size as the 3.0 L Duratec 30, 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. The Duratec 30 continues in production for other vehicles, such as the Ford Fusion and Mercury Milan until the 2009 model year. The Duratec 35 displaces 3.5 L (3496 cc/213 in³) with a 92.5 mm (3.64 in) bore and 86.7 mm (3.41 in) stroke. The engine is assembled at Lima Engine in Lima, Ohio, with expansion planned in Cleveland Engine Plant #1.

Former Applications:

2007 Mazda CX-9 (MZI)

The 3.5 L Duratec 35 installed in a 2007 Lincoln MKZ

Current applications:

265 hp (Expression error: Unrecognised punctuation character "{" kW) at 6250 rpm and 250 ft·lbf (Expression error: Unrecognised punctuation character "{" N·m) at 4500 rpm
- 2007– Ford Edge
- 2007– Lincoln MKX
263 hp (Expression error: Unrecognised punctuation character "{" kW) at 6250 rpm and 249 ft·lbf (Expression error: Unrecognised punctuation character "{" N·m) at 4500 rpm
- 2007– Lincoln MKZ
- 2008– Ford Taurus
- 2008– Ford Taurus X
- 2008– Mercury Sable

Future applications:

2009 Ford Fusion
2009 Ford Flex
2009 Ford Mustang
2010 Ford Falcon (Australia)
2010 Ford Territory (Australia)

Duratec 37

The Duratec 37 is a 3.7 L (3721 cc/227 in³) version of the Duratec 35 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). The Duratec 37 will be the standard engine for the 2009 Lincoln MKS and the 2009 Ford F-150. A Duratec 37 (MZI 3.7) began production in the 2008 Mazda CX-9. The Mazda 3.7 L MZI is assembled in Hiroshima, Japan.

Current applications:

273 hp (Expression error: Unrecognised punctuation character "{" kW) at 6250 rpm and 270 ft·lbf (Expression error: Unrecognised punctuation character "{" N·m) at 4250 rpm
- 2008– Mazda CX-9 (MZI)

Future applications:

2008 Mazda 6 (MZI)
2009 Ford F150
2009 Lincoln MKS
2009 Lincoln MKZ

TwinForce

A direct-injected, twin-turbocharged version of the all-aluminum Duratec 35 has been developed, producing 430 hp (Expression error: Unrecognised punctuation character "{" kW) and 400 ft·lbf (Expression error: Unrecognised punctuation character "{" N·m) of torque. The TwinForce 3.5L V6 is intended to deliver the performance (on demand) of a typical large displacement 6.0 L-class V8, with the normal driving (highway) fuel efficiency of a 3.0 L to 4.0 L class V6. [1] [2] Gasoline direct injection more precisely manages fuel flow into the cylinders, for more efficient combustion and emissions control, when compared to port injection. Twin-turbocharging forces more air into the engine on demand, allowing additional fuel to be injected and burned, producing more power: 118 hp (Expression error: Unrecognised punctuation character "{" kW) per liter in the case of the TwinForce.

Technologies for the twin turbocharging system were developed in cooperation with Volvo Cars, and the gasoline direct injection system is a joint development between Ford and Bosch based on Bosch DFI systems already in production. The engine is also capable of operating on any mix of E85 ethanol and premium gasoline, and makes its debut in the Lincoln MKR concept coupe/sedan, introduced at the 2007 North American International Auto Show.