Toyota GZ engine
Encyclopedia
The Toyota GZ engine family consists of a single model, the 1GZ-FE. This engine is used as the powerplant for the Japanese
market-only Toyota Century
limousine
from 1997 onward.
48-valve
DOHC engine with variable valve timing (VVT-i
). Bore is 81 mm and stroke is 80.8 mm, with a compression ratio
of 10.5:1. Official output as per Japanese Manufacturers' Agreement is 206 kW at 5200 rpm
although true power output is estimated to be around 230 kW. Peak torque
of 481 N·m (354.8 ft·lbf) is at 4000 rpm with over 400 N·m (295 ft·lbf) available from as little as 1200 rpm. The fuel injection system is controlled by two ECU
s, one for each bank of cylinders. The engine is capable of running on a single bank of 6 cylinders should a malfunction occur.
A version is available running on compressed natural gas which produces 190 kW and 420 N·m (309.8 ft·lbf) and qualifies the 2-ton limousine as a low emissions vehicle. In 2010 the standard engine was revised in order to meet tough fuel economy and emissions standards, reducing power slightly and peak torque to 460 N·m (339.3 ft·lbf).
One notable use of this engine has been by Top Secret in a custom 950 hp Toyota Supra.
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
market-only Toyota Century
Toyota Century
The Toyota Century is a large four-door limousine produced mainly for the Japanese market, serving as Toyota's flagship car. Production of the Century began in 1967 and the model received only minor changes until a redesign in 1997. The Century derived its name from the 100th anniversary of the...
limousine
Limousine
A limousine is a luxury sedan or saloon car, especially one with a lengthened wheelbase or driven by a chauffeur. The chassis of a limousine may have been extended by the manufacturer or by an independent coachbuilder. These are called "stretch" limousines and are traditionally black or white....
from 1997 onward.
1GZ-FE
The 1GZ-FE is a 5.0 L (4996 cc) V12V12 engine
A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12 pistons driving a common crankshaft....
48-valve
Valve
A valve is a device that regulates, directs or controls the flow of a fluid by opening, closing, or partially obstructing various passageways. Valves are technically pipe fittings, but are usually discussed as a separate category...
DOHC engine with variable valve timing (VVT-i
VVT-i
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota, similar in performance to the BMW's VANOS. The Toyota VVT-i system replaces the Toyota VVT offered starting in 24 December 1991 on the 5-valve per cylinder 4A-GE engine. The...
). Bore is 81 mm and stroke is 80.8 mm, with a compression ratio
Compression ratio
The 'compression ratio' of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity...
of 10.5:1. Official output as per Japanese Manufacturers' Agreement is 206 kW at 5200 rpm
Revolutions per minute
Revolutions per minute is a measure of the frequency of a rotation. It annotates the number of full rotations completed in one minute around a fixed axis...
although true power output is estimated to be around 230 kW. Peak torque
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....
of 481 N·m (354.8 ft·lbf) is at 4000 rpm with over 400 N·m (295 ft·lbf) available from as little as 1200 rpm. The fuel injection system is controlled by two ECU
Electronic control unit
In automotive electronics, electronic control unit is a generic term for any embedded system that controls one or more of the electrical systems or subsystems in a motor vehicle....
s, one for each bank of cylinders. The engine is capable of running on a single bank of 6 cylinders should a malfunction occur.
A version is available running on compressed natural gas which produces 190 kW and 420 N·m (309.8 ft·lbf) and qualifies the 2-ton limousine as a low emissions vehicle. In 2010 the standard engine was revised in order to meet tough fuel economy and emissions standards, reducing power slightly and peak torque to 460 N·m (339.3 ft·lbf).
One notable use of this engine has been by Top Secret in a custom 950 hp Toyota Supra.
See also
- List of Toyota engines
- Acoustic Control Induction SystemAcoustic Control Induction SystemAcoustic 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...
- VVT-iVVT-iVVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota, similar in performance to the BMW's VANOS. The Toyota VVT-i system replaces the Toyota VVT offered starting in 24 December 1991 on the 5-valve per cylinder 4A-GE engine. The...