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Inside the wastegate actuator, a spring acts to open the wastegate, and oil pressure acts to close the wastegate. On the oil output side of the wastegate actuator sits the density controller, an air-controlled oil valve which senses upper deck pressure and controls how fast oil can bleed from the wastegate actuator back to the engine. As the ...
This system consists of an electrically driven water pump and a 3-way rotary valve which allows the engine to maintain proper operating temperatures and quicker warm-ups. Also, a continuously variable oil pump helps to lower parasitic losses and provide proper lubrication and cooling to the engine, especially under high-load conditions. [ 1 ]
The only DOHC direct derivative of Pinto engine is the Cosworth YB 16-valve engine, powering Ford Sierra and Ford Escort RS Cosworth variants and featuring a cast aluminium alloy cylinder head developed specially by Cosworth fitted to a modified Pinto cast iron block.
A 3.0L displacement version, with common-rail fuel injection, four-valve-per-cylinder heads, and 160 hp (119 kW) (wastegate turbo), is the electronic version of the Power Stroke. It has only the block and connecting rods in common with 2.8L Power Stroke.
Using a turbocharger spool valve to increase exhaust gas flow speed to the (twin-scroll) turbine; Using a butterfly valve to force exhaust gas through a smaller passage in the turbo inlet; Electric turbochargers [51] and hybrid turbochargers. A similar phenomenon that is often mistaken for turbo lag is the boost threshold. This is where the ...
Regardless of the effectiveness of the boost controller, wastegate actuator springs that are too soft can cause the wastegate to open before desired. This due to the exhaust gas backpressure pushing against the wastegate valve itself, causing the valve to open of the actuator at all. Therefore, there is an upper limit to the effectiveness of a ...
The main differences between the naturally aspirated and the turbocharged versions are the cylinder head, injection pump, valves, camshafts, rods, intake and exhaust manifolds and some minor differences like oil feed and return holes for the turbo and different crankcase ventilation system, valve cover and plastic engine cover.
The valve cover is different as for the first time in the 3S-GTE series as the oil filler hole is on top of the exhaust camshaft instead of the intake. Other differences include the first time that there is no oil cooler in this generation as well as OBD2 diagnostics.