Forse è la notizia che tutti aspettavano. Nuovo motore da 205hp per Toyota heavy duty. Qui l'articolo. Per la traduzione babel fish....

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Saluti,

Ops

Toyota

LandCruiser 70-Series' all-new 4.5-litre V8 turbo-diesel engine is the first Toyota engine with a graphite-iron cylinder block.

The use of graphite iron provides for low weight and a compact size while resisting the high cylinder pressures of a turbocharged diesel design.

The turbocharged and intercooled Quad Cam 32-valve Toyota 1VD-FTV engine uses electronic high-pressure (common rail) D-4D direct injection.

The water-cooled turbocharger utilises a variable nozzle vane to ensure high engine output, low fuel consumption and low emissions.

The 1VD-FTV engine has an air-to-air intercooler and dual electronic throttle valves.

The 4461cc engine has a 90-degree V angle, undersquare bore and stroke dimensions of 86.0mm by 96.0mm to maximise torque and a compression ratio of 16.8:1.

The bank offset is 22mm and the bore pitch is 97mm, to create a compact block relative to the engine's displacement.

The forged steel crankshaft has five journals and seven balance weights.

All pins and induction journals' fillets are hardened to ensure optimum strength.

The base of the cylinder block has substantial stiffening plates, to minimise vibration, and four plastic-region tightening bolts for each bearing cap.

The connecting rods are made of high-strength steel and the big-end bearings are secured with nut-less plastic-region tightening bolts.

Knock pins are used at the mating surfaces of the bearing caps, to ensure correct alignment during assembly.

The 1VD-FTV engine has aluminium-alloy pistons with combustion chambers in the piston crown.

The pistons have an internal cooling channel, a Ni-resist cast-iron top ring carrier to improve wear resistance and resin coating on the skirt to reduce friction loss.

Oil jets at the bottom of the cylinder bores spray oil on the underside of the pistons to improve piston cooling and lubrication.

The cylinder heads are made of aluminium alloy, with two-stage water-jacket construction to improve cooling.

An exhaust gas recirculation (EGR) passage reduces emissions.

The combustion chamber design includes four valves with a central solenoid-type high-pressure injector nozzle to improve performance and minimise emissions.

The injection system includes pilot injection control to improve performance and fuel economy and reduce emissions.

A glow plug located between the inlet valves improves engine starting.

Four camshafts are used in the new LandCruiser V8 diesel engine, to ensure accurate valve timing.

Camshaft drive is by a gear train to an idler gear, by chain to the inlet camshafts and by gears from each inlet camshaft to its partner exhaust camshaft.

Individual cam lobes activate the valves via roller rockers with built-in needle bearings, to reduce friction and optimise fuel economy.

In addition to roller rockers, the new engine has maintenance-free valve clearance adjusters to maintain constant zero valve clearance between the rocker arm and valve stem.

The 1VD-FTV engine's turbocharger is water-cooled, for increased reliability.

The inlet air passes through an air-cooled intercooler and separate throttle valves for each cylinder bank, before reaching the inlet ports.

A crossover pipe balances the exhaust pressure between the two cylinder banks, to ensure efficient turbocharger operation.

Other features of the 1VD-FTV engine include a linear temperature-controlled coupling for the cooling fan, a fuel cooler, a fuel filter with a warning switch, a segment-conductor-type alternator and an oxidation catalytic converter

Ciao a tutti, ho recentemente parlato di persona con alcuni "operatori del settore" e mi hanno confermto il fatto che il nuovo motore in questione lo vedremo sul nuovo LC 100 in configurazione 295CV D4D dalla primavera 2008, sulle versioni heavy duty (serie 7 nei vari passi disponibili) mi hanno confermato che per il mercato australiano e' gia' presente tale motore (in versione "depotenziata a 204cv" e con potenza piena) ma che allo stato delle cose attuali,a causa anche della guida a destra e per problemi di importazione parallela, per almeno 1 anno se tutto va bene dovremo "tenerci" il fido 1HZ......