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The valve mechanism is equipped with 4-Valves per cylinder, DOHC, and implemented Toyota's Dual VVT-i and VVT-iW. It also uses multi-point or direct fuel injection . The 1NR, 2NR, 3NR, 4NR, 5NR, 6NR, and 7NR engines have Dual VVT-i standard and the 8NR engine has VVT-iW , enabling it to operate in the Otto cycle as well as a modified- Atkinson ...
Cutaway view of Variable Valve Timing with intelligence on a ZR engine in Techniquest Glyndŵr. VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing petrol engine technology manufactured by Toyota Group and used by brands Groupe PSA (Peugeot and Citroen), Toyota, Lexus, Scion, Daihatsu, Subaru, Aston Martin, Pontiac and Lotus Cars.
The 4 valves per cylinder are actuated by the SOHC, by using bridges so each rocker actuates a pair of valves. The version with intercooler as fitted to HDJ100 station wagons has 202 hp (151 kW; 205 PS) at 3400 rpm with 430 N⋅m (317 lb⋅ft) of torque at 1200-3200 rpm with a redline reaching 4200 rpm. A lower output 122 kW (164 hp; 166 PS ...
The Toyota 8ZR-FXE is a 1.8 L (1,797 cc) Atkinson cycle engine paired with electric motor/generators in a hybrid drive system. This engine is an analogue of the 2ZR-FXE for use in China only. [14] Specifications. Type: inline 4 cylinder DOHC 16 valve VVT-i Atkinson cycle; Exhaust volume: 1.8 L (1,798 cc)
The ACIS/TVIS System. Acoustic Control Induction System, or ACIS, is an implementation of a variable-length intake manifold system designed by Toyota.. Simply put, the ACIS system uses a single intake air control valve located in the intake to vary the length of the intake tract in order to optimize power and torque, as well as provide better fuel efficiency and reduce intake "roar".
The Toyota GR engine family is a gasoline, open-deck, piston V6 engine series. The GR series has a 60° die-cast aluminium block and aluminium DOHC cylinder heads.This engine series also features 4 valves per cylinder, forged steel connecting rods and crankshaft, one-piece cast camshafts, a timing chain, [1] and a cast aluminium lower intake manifold.
Toyota upped the ante again with the DOHC (but still 2-valve) 8R-G, produced from 1969 through 1972. From 1969 to Feb 1971 it was known as the 10R , but along with a removal of the tensioner gear in the interest of quieter operation, it was renamed the 8R-G to reflect the decision that twin-cam engines were henceforth to be identified by a "-G ...
The Toyota AZ engine family is a straight-4 piston engine series. The AZ series uses an aluminium engine block with cast iron cylinder liners and aluminium DOHC cylinder head. . The engine series features many advanced technologies including slant-squish combustion chambers, offset cylinder and crank centers, and the VVT-i continuously variable intake valve timing syst