General information about 1MZ-FE engines The 1MZ-FE engine is a six-cylinder, V-twin, 3-liter, 24-valve, DOHC engine developed from the previous generation Camry's 1MZ-FE engine (tab. 2.19). The design of this engine has been optimized to improve performance,...
Distinctive features of the 1MZ-FE model engine 1MZ-FE engine specifications listed below (see table. 2.20) provided by the use of the elements and systems indicated in the table. High efficiency and fuel efficiency. Low noise and vibration. Light weight and compact...
Cylinder head cover Pic. 2.179. 1MZ-FE engine cylinder head cover: 1 - gasket; 2 - for the right row of cylinders; 3 - for the left row of cylinders; 4 – a cover of a head of the block of cylinders; 5 - rubber; 6 - aluminum; 7 – a head of...
Cylinder head gasket Pic. 2.180. 1MZ-FE Engine Cylinder Head Gasket A metal cylinder head gasket is used to provide pressure resistance and increase sealing properties.
Cylinder head — design description The cylinder head is made of aluminum and has wedge-shaped combustion chambers. The spark plug is located in the center of the combustion chamber. The intake and exhaust valves are located at a sharp angle of 22.5°,...
Cylinder block — design description The cylinder block has a camber angle of 60°and a mutual longitudinal displacement of the cylinder rows of 36.6 mm (1.44 inches), the distance between the axes of the cylinders is 105.5 mm (4.15 inches), which makes it...
Piston — design description The piston is made of aluminum alloy, and the skirt area is made compact and lightweight. The piston skirt is coated with a polymer to reduce friction losses. Piston pins - floating type. The pistons of the right and...
Connecting rod — design description Pic. 2.184. Connecting rod: 1 - pin; 2 - bolt with tightening torque in the plastic zone connecting rods (pic. 2.184) Manufactured from high strength steel to reduce weight. Connecting rod bearings are coated aluminum....
Crankshaft — design description Pic. 2.185. Crankshaft: 1 - the main neck of the crankshaft No. 1; 2 - knurling; 3 - counterweight; 4 - the main neck of the crankshaft No. 4 Crankshaft (pic. 2.185) forged steel, has four main journals and nine...
Crankshaft pulley — design description Pic. 2.186. Crankshaft pulley: 1 - cast iron; 2 - rubber damper torsional vibrations; 3 - steel; 4 - aluminum Crankshaft Pulley Bushing (pic. 2.186) Made of aluminum to reduce weight and vibration. The rubber hardness...
Valve drive mechanism — general information Pic. 2.187. Diagram of the valve drive mechanism: 1 - inlet valves; 2 – a cam-shaft of a drive of final valves; 3 - camshafts of the intake valve drive; 4 – a cam-shaft of a drive of final valves; 5 - exhaust valves...
Intake and exhaust valves and valve lifters Pic. 2.189. Inlet and outlet valves and valve lifters: 1 - camshaft; 2 - adjusting washer; 3 - valve pusher; 4 - valve; 5 - adjusting washer; 6 - cutout; 7 - valve lifter Reduced diameter valve stems are used to reduce...
Timing belt of the timing mechanism drive The timing belt tooth configuration was developed to reduce noise and enable power transmission at high load factors. Pic. 2.190. Toothed belt drive timing mechanism: 1 - toothed pulleys of the gas distribution...
Timing belt tensioner of the timing mechanism Pic. 2.191. Timing belt tensioner: 1 - plunger spring; 2 - belt tensioner; 3 - return spring The timing belt tensioner uses a spring and an oil damper to maintain tension on the timing belt at all times. Also, the...
Lubrication system — general information The lubrication system works under pressure, the oil passes through the oil filter. The engine uses a lubrication system with full-flow oil cleaning and with the supply of oil under pressure to the main moving parts and...
Cooling system — general information On a Camry car with a 1MZ-FE engine, a closed-type cooling system with forced circulation of coolant and a thermostat with a bypass valve in the coolant inlet pipe is installed. The thermostat with bypass valve is...
Intake and exhaust system — general information Application of ETCS-i (Intelligent Electric Throttle Control System) allowed for improved accelerator control. Application of ACIS (Acoustic intake control) improved engine performance. The use of an intake system...
Intake Manifold — Design Description The diameter of the intake manifold passages has been increased and the length has been optimized to improve engine performance. Pic. 2.197. Intake manifold: 1 - channel of the engine cooling system; 2 - rubber coating...
Exhaust manifold — design description Pic. 2.198. An exhaust manifold: 1 - air-fuel ratio sensor (row 1, sensor 1); 2 - air-fuel ratio sensor (row 2, sensor 1); 3 - three-way catalytic converters An exhaust manifold (pic. 2.198), made of stainless steel is...
Exhaust system — design description Pic. 2.199. Exhaust system: 1 - three-component catalytic converter; 2 – additional muffler; 3 - main muffler A thin-walled, high-cell ceramic three-way catalytic converter is used (pic. 2.199). This converter allowed...
Fuel system — general information Pic. 2.200. The fuel system of a Camry car with a 1MZ-FE engine: 1 - fuel injector; 2 – pulsation damper; 3 - fuel tank; 4 - fuel pump The fuel system without fuel return to the tank is used to reduce the emission of...
Ignition system — general information Pic. 2.203. Scheme of the ignition system DIS system applied (Direct ignition system, see fig. 2.203). DIS improves ignition timing accuracy, reduces high voltage losses, and improves overall ignition system reliability...