Toyota diesel - F33A-FTV

EN | RU

Eugenio,77
mail@toyota-club.net
© Toyota-Club.Net
Jul 2021



Preliminary review of the new diesel of Land Cruiser 300

Specifications

EngineDisplacement, cm3Bore x Stroke, mmCompression ratioOutput, hpTorque, Nm-
F33A-FTV3346 86.0 x 96.015.4308 / 4000700 / 1600-2600CSC
299 / 3600-4200700 / 1600-2600CSC RUS
306 / 4000700 / 1600-2600non-CSC
Engine weight ~266 kg.
Emissions grades: Euro 2-3-4-5, BS 6

Engine mechanical

The engine obtained a cast-iron cylinder block with a closed deck. The main bearing caps are integrated into a bearing beam carrier. At the rear side, the banks are connected by a bridging arch to increase rigidity.


1 - cylinder block. a - bearing beam, b - arch shape, c - cylinder bore, d - bore cross hatch

For the first time for Toyota V6s a split balancer shaft installed, driven by crankshaft.


1 - balanceshaft 1, 2 - balanceshaft 2, 3 - crankshaft, 4 - rear balanceshaft weight, 5 - balanceshaft 1 driven gear

Pistons - of steel, with a combustion chamber, some unusual shape. Piston pin with DLC coating.


1 - piston, 2 - piston pin, 3 - compression ring 1, 4 - compression ring 2, 5 - oil expander ring. a - compression height, b - dlc coating

The crankshaft is made of carbon steel.


1 - crankshaft, 2 - bearing 1/2, 3 - bearing 3/4, 4 - upper thrust washer, 5 - rear balancer a - fillet, b - oil groove, c - resin overlay

Cylinder head - with double-stage cooling jacket, with integrated exhaust manifold.


1 - cylinder head


1 - exhaust manifold

Valve mechanism - DOHC 24V: double camshafts in the heads and four valves per cylinder. There are valve adjusters and roller rockers in the valve mechanism.


1 - camshaft timing sprocket, 2 - camshaft timing sprocket 2, 3 - intake camshaft lh, 4 - exhaust camshaft lh, 5 - intake valve, 6 - exhaust valve, 7 - intake valve compression spring, 8 - exhaust valve compression spring, 9 - exhaust camshaft rh, 10 - intake camshaft rh, 11 - rocker arm 1, 12 - valve stem cap, 13 - valve spring retainer lock, 14 - valve spring retainer, 15 - valve stem oil seal, 16 - valve lash adjuster

Valvetrain is "two-step" - from the crankshaft by the primary roller chain to injection pump shaft, and then by secondary chains to all camshafts.


1 - supply pump shaft sprocket, 2 - chain vibration damper 2, 3 - camshaft timing sprocket, 4 - chain 2, 5 - camshaft timing sprocket 2, 6 - chain tensioner slipper rh, 7 - chain tensioner 2, 8 - chain tensioner 1, 9 - chain tensioner slipper, 10 - chain 1, 11 - chain vibration damper 1, 12 - chain vibration damper 3, 13 - chain tensioner slipper lh, 14 - chain tensioner 3

Auxiliary are driven by common belt with automatic tensioner.


1 - idler pulley, 2 - tensioner, 3 - alternator pulley, 4 - crankshaft pulley, 5 - magnet clutch, 6 - fan and generator v-belt, 7 - fan pulley, 8 - coolant pump

Lubrication

The engine is equipped with a water oil cooler. The cylinder block contains oil nozzles for cooling and lubrication of pistons, equipped with check valves. In addition, the oil is supplied for turbochargers and vacuum pump.


1 - oil filter, 2 - oil strainer, 3 - oil pump, 4 - oil cooler

The oil pump is installed on the crankshaft carrier and is driven by a separate chain.


1 - oil pump, 2 - crankshaft bearing cap, 3 - oil pump rotor. a - from oil pump, b - to oil cooler/oil filter, c - from oil strainer

Recommended oil types: Euro-II..IV - 5W-30/10W-30 API CF-4,CF / ACEA B3, B4, B5 / JASO DL-0 Euro-V..VI - 0W-20 ACEA C5, 0W-30..5W-30 ACEA C2

Cooling

The cooling system is classic, the thermostat is rather "cold" (76°C) mechanical. Like V35, the fan has a belt drive, but instead of a simple viscous clutch, an electronically controlled hydraulic clutch is installed, which allows the fan to slow down at start-up, warm-up, idle and at low load.

In fact, the second cooling system with its own electric pump and two radiators is tied to an intercooler (also serves turbochargers, AdBlue supply module and exhaust fuel injector).

Intake and exhaust

A pair of turbochargers with variable geometry (VGT or VNT) at low speeds operate in single-turbo mode, at high speeds as twin-turbo.


1 - air by-pass valve, 2 - actuator, 3 - turbocharger 2, 4 - turbocharger 2 variable nozzle motor, 5 - exhaust control valve, 6 - intake air control valve, 7 - turbocharger variable nozzle motor, 8 - turbocharger. a - air (single/twin turbo mode), b - air (twin turbo mode), c - exhaust gas (single/twin), d - exhaust gas (twin), e - from air cleaner, f - to intercooler, g - from cylinder head lh, h - from cylinder head, i - to exhaust pipe

To cool the charge air on the car, a large intercooler with autonomous liquid cooling is installed. An electric throttle valve is located in the intake.


Fuel system / Control

Common Rail type fuel system - the fuel is supplied by high pressure pump in a common rail and then is injected into the cylinders via the electronically controlled injectors. The injection pressure - up to 270 MPa. The system is branded i-ART (intelligent-Accuracy Refinement Technology)

1 - ECM, 2 - crankshaft position sensor, 3 - camshaft position sensor, 4 - pre-stroke control valve, 5 - injection pump, 6 - fuel filter, 7 - exhaust injector, 8 - priming pump, 9 - fuel filter, 10 - fuel tank, 11 - injector, 12 - pressure discharge valve, 13 - common-rail (B1), 14 - common-rail (B2). a - fuel (high pressure), b - fuel (feed pressure), c - fuel (suction), d - fuel (return)

Injection pump - HP5D type.

1 - pre-stroke control valve. a - to exhaust injector / pressurized fuel filter, b - outlet (to fuel tank), c - inlet (priming pump), d - to common-rail, e - from pressurized fuel filter

There are fuel pressure sensor and pressure discharge valve in the fuel rail. Electronically controlled valve opens and closes by a signal from the control unit, moreover, it can function of emergency pressure relief.

The injectors are of the electromagnetic type. They use individual fuel pressure and temperature sensors, which allow to accurately adjust the injection volume of each injector, as well as to determine their malfunction (clogging or leaks). The injectors are equipped with built-in memory and a self-learning function. The principle of operation is similar to the injectors of the GD series.

1 - solenoid, 2 - nozzle needle, 3 - nozzle, 4 - control plate

On models with two fuel tanks, an optional electric fuel pump is used.

Fuel filter - complex modular design with the ability to replace the filter element.

The exhaust has built-in low-pressure fuel injector supplied directly from the pump to raise the temperature of DPF for accumulated soot combustion.

Emission control system

As with the GD series, depending on the level of eco-standards, several combinations are possible: EGR, EGR+DOC, EGR+DOC+DPF, EGR+SCR-DPF+DPF

• EGR (Exhaust Gas Recirculation) is an advanced multi-mode structure with three valves and two coolers.

1 - intake pipe 1, 2 - EGR pipe 4, 3 - EGR control valve, 4 - EGR inlet, 5 - EGR cooler 1, 6 - EGR cooler 2, 7 - EGR valve 2 a - intake air, b - EGR gas, c - EGR gas (bypass)

• DOC (oxidation catalyst) - primary stage of exhaust gas cleaning - oxidizes hydrocarbons and carbon monoxide to water and carbon dioxide.
• DPF (diesel particulate filter) - used to accumulation and combustion of soot particles.
• SCR (selective catalytic reduction) - used to reduce of NOx contents in the exhaust gas by injection of urea solution (AdBlue/DEF).



Toyota engines review
· AZ · MZ · NZ · SZ · ZZ · AR · GR · KR · NR · ZR · AD · GD · ND · A25.M20 · F33 · G16 · M15 · V35 ·






Рейтинг@Mail.ru