Toyota ZZ engine
Reciprocating internal combustion engine / From Wikipedia, the free encyclopedia
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The Toyota ZZ engine family is a straight-4 piston engine series. The ZZ series uses a die-cast aluminium engine block with thin press-fit cast iron cylinder liners, and aluminium DOHC 4-valve cylinder heads.[1] The camshafts are chain-driven. The two 1.8 L members of the family, the 1ZZ and 2ZZ, use different bore and stroke. The former was optimised for economy, with torque emphasised in lower revolutions per minute operating range, while the latter is a "square" design optimised for high-RPM torque, yielding higher peak power. The ZZ family replaced the extremely popular cast-iron block 4A engines.
Toyota ZZ engine | |
---|---|
Overview | |
Manufacturer | Toyota |
Production | 1997–2008 |
Layout | |
Configuration | Straight-4 |
Displacement | 1.4 L; 85.3 cu in (1,398 cc) 1.6 L; 97.5 cu in (1,598 cc) 1.8 L; 109.5 cu in (1,794 cc) 1.8 L; 109.6 cu in (1,796 cc) |
Cylinder bore | 79 mm (3.11 in) 82 mm (3.23 in) |
Piston stroke | 71.3 mm (2.81 in) 81.5 mm (3.21 in) 85 mm (3.35 in) 91.5 mm (3.60 in) |
Cylinder block material | Aluminium, Cast iron |
Cylinder head material | Aluminium |
Valvetrain | DOHC 4 valves x cyl. with VVT-i and VVTL-i (some versions) |
Compression ratio | 10.0:1, 11.5:1 |
Combustion | |
Supercharger | TRD (some versions) |
Fuel system | Multi-point fuel injection |
Fuel type | Gasoline |
Cooling system | Water-cooled |
Chronology | |
Predecessor | A engine |
Successor | ZR engine (for 1ZZ and 2ZZ series) |
Toyota engine names are interpreted as follows. The leading number denotes the generation, and the next one or two letters, specify the engine family. The remaining letters, following a hyphen, describe the engine's major features. For example, the 2ZZ-GE can be decoded as being the second generation of the ZZ engine series and features a performance-oriented cylinder head with widely angled valves (G) and electronic fuel injection (E).[2]