- Toyota MZ engine
Infobox Automobile engine
name=Toyota MZ engine
Toyota Motor Corporation
Toyota GR engine
ToyotaMZ engine family is a V6 piston engineseries. The MZ series has an aluminium engine block and aluminium alloy DOHC cylinder heads. The cylinders are lined with cast iron, and is of a closed deck design (no open space between the bores). It uses multiport fuel injection(MFI), has 4 valves per cylinder and features a one-piece cast camshaftand cast aluminium intake manifold. The MZ family is a lightweight V6 engine of an all aluminium design, using lighter weight parts than the heavier duty VZ block engines in an effort to lower production costs, decrease engine weight, and decrease reciprocating weight without sacrificing reliability. Toyota sought to enhance the drivability pattern of the engine (over the 3VZ) at exactly 3000rpm, since that was the typical RPM for motors cruising on the highway. The result was less cylinder distortion (coupled with the decreased weight of rotating assemblies), smoother operation (less NVH) at that engine speed, and increased engine efficiency.
They feature cast aluminium pistons with an anti-friction resin coating (moly) and valve depressions on motors without VVT-i. They also use steel rings, smaller diameter, shot-peened rods, and a forged steel
The 1MZ-FE is a 3.0 L (2994 cc) engine. Bore is 87.5 mm and stroke is 83 mm. Output is 168-190 hp @ 5200-5400 rpm with 183-193 ft·lbf of torque at 4400 rpm. Horsepower ratings dropped after the
Society of Automotive Engineersimplemented a new power measurement system for vehicle engines. It has bucket tappets and was designed for good fuel economy without an overall performance trade-off.
The 1MZ-FE was on
Ward's 10 Best Engineslist for 1996.
Toyota Camry Solara
* 1994-2003 Lexus ES 300 & Toyota Windom (Japanese domestic market)
Toyota Avalon& 2000 Toyota Pronard (Avalon for Japanese domestic market)
Lexus RX300& Toyota Harrier (Japanese domestic market)
Toyota Estima(Japanese domestic market)
The 1MZ-FE with
VVT-iis used in the Avalon, Highlander, Sienna and Camry. Output is 210 hp (156 kW) at 5800 rpm with 222 ft·lbf (328 N·m) of torque at 4400 rpm. Early versions of the VVT-i 1MZ used a dual throttle body, cast aluminum intake manifold, and EGR block off plates on the exhaust manifolds. Later versions used an ABS plastic intake manifold to further weight reduction and decrease cost. These versions may also have drive-by-wire/electronic throttle control.
* 2001-2003 Toyota Highlander/Kluger
Toyota Alphard(Japanese domestic market)
* 1999-2001 Lexus ES 300
The 2MZ-FE is a 2.5 L (2496 cc) engine replacing the 4VZ-FE as the worldwide 2.5 L V6. Bore is 87.5 mm and stroke is 69.2 mm. Output is Convert|200|hp|kW|-1|abbr=on at 6000 rpm with torque of Auto ft.lbf|180|0 at 4600 rpm.
Toyota Windom(Japanese domestic market)
Toyota Mark II Qualis(Japanese domestic market)
The 3MZ-FE is a 3.3 L (3310 cc) version . Bore is 92 mm and stroke is 83 mm. Output is Convert|225|hp|kW|0|abbr=on with Auto ft.lbf|240|0 of torque in the Camry and Convert|215|hp|kW|0|abbr=on with Auto ft.lbf|222|0 of torque in the Sienna and Highlander. It also features
VVT-i, ETCS-i (Electronic Throttle Control System - intelligent/DBW), ABS plastic intake, and increased throttle body diameter over the 1MZ. The 3MZ uses a new flat-type knock sensor, which is a departure from the typical resonator type knock sensor used on the previous MZs. Those MZs had poor knock control, or perhaps oversensitivity when detecting knock, and power loss up to 20hp may be realized due to erratic ignition timing (advance, retard, ...) when using an octane lower than 91. The new flat type knock sensor is a completely different design and detects more frequencies than the traditional resonator type, and thus, provides the ECU with more accurate data. A bolt goes through the center of the knock sensor, which then mates the sensor to the block on each bank. Applications:
Toyota CamrySE V6
Toyota Camry Solara
Toyota Highlander Hybrid
*2003-2006 Lexus RX 330
Lexus RX 400h
*2004-2006 Lexus ES 330
List of Toyota engines
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