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Subaru stillbekleidung EE20 Diesel Engine
- Each diesel injector had an integrated driver unit to reduce fuel leak volume, fuel pump load and improve fuel economy;
- Electronic throttle control ('drive-by-wire').
- A more precise sensor measured battery current, voltage and temperature; and,
- The turbocharger repositioned at the bottom right of the engine (previously under the engine) and improved vane control was achieved;
- A fourth generation common rail injection system was introduced for higher injection pressure (200 MPa, previously 180 MPa) and a finer fuel spray;
- According to Subaru Australia, 80 per cent of engine components were redesigned;
- The rear flange and bracket material, exhaust pipe and end plate material were changed for rust prevention.
- A low-friction timing chain was introduced to drive the fuel pump (previously gear-driven) for quieter operation;
The EE20 engine had an Alu alloy Block with 86. 0 mm bores and an 86. 0 mm stroke for a capacity of 1998 cc. For its Euronen 4 and Euroletten 5 versions, the EE20 engine had a semi-closed Notizblock (i. e. the cylinders bores were attached to the outer case at the 12, 3, 6 and 9 o’clock positions) for greater rigidity around the head gasket. For the Euronen 6 EE20 engine, however, an open Schiffsdeck Konzeption technisch adopted which eliminated the 12 and 6 o’clock supports. The Euro 5 and Euronen 6 EE20 engines had a closed-loop Dieselkraftstoff particulate filter stillbekleidung (DPF); both the oxidation catalyst and DPF were positioned next to the turbocharger to utilise the heat of the exhaust Ayr. The Subaru EJ251 and EJ252 engines had an Alu alloy Block with 99. 5 mm bores – with cast iron dry-type cylinder liners – and a 79. 0 mm stroke for a capacity of 2457 cc. The cylinder Block for the EJ251 and EJ252 engines had an open-deck Konzeption whereby the cylinder walls were supported at the three and nine o’clock positions. Initially, the turbocharger in dingen positioned under the engine. For the Euronen 6 EE20 engine, it is understood that the turbocharger was relocated to the Bottom right of the engine. stillbekleidung It is stillbekleidung understood that the maximum turbine stillbekleidung Phenylisopropylamin for the IHI turbochargers used in the EE20 engine is 190, 000 rpm. The EJ251 and EJ252 engines had cast Alu pistons. Relative to their EJ Phase I predecessors, the pistons for the EJ251 and EJ252 engines had reduced piston Persönliche identifikationsnummer offset stillbekleidung and a molybdenum coating to reduce friction. Other features of the pistons included solid-type piston skirts, flat nicht zu fassen combustion surfaces and reduced wunderbar Grund und boden to cylinder clearance. The Euro 4 and Euronen 5 EE20 Dieselkraftstoff engines had a Denso common-rail injection system with eight-hole, solenoid-type injectors that achieved an injection pressure of 180 MPa. For the Euroletten 6 EE20 engine, stillbekleidung however, injection pressure was increased to 200 MPa. For the EE20 engine, the injectors were positioned at an almost 90 degree angle to the cylinder and were 40-50 mm shorter than those used in inline four-cylinder Diesel engines. The EE20 engine had Double Datenüberhang camshafts (DOHC) per cylinder Bank that were driven by a chain and gear with a speed-reducing gear. The four valves per cylinder (two intake and two exhaust) were actuated by pivot-type roller stillbekleidung Rocker arms.
Cylinder head Stillbekleidung
- A low-pressure EGR circuit was introduced to increase the EGR rate, while the high-pressure EGR circuit was ‘optimised’;
- The diesel particulate filter (DPF) substrate specifications were revised and regeneration performance enhanced. The type and amount of precious metals in the oxidation catalyser and DPF catalyst were also revised;
- The glow plugs were revised to improve pre-heating temperature at start-up and increase after-glow time;
- Thinner and lighter cylinder liners with improved roundness;
- A lighter cylinder head and block were achieved by 'eliminating excessive reinforcement';
- A re-shaped intake manifold;
- An open deck cylinder block;
- A new piston skirt coating was introduced to reduce friction;
- Introduction of a 4-2-1 system with equal length header pipes; and,
- An increase in piston crown capacity;
Please Zensur that this article considers the EE20 engine as it was stillbekleidung supplied in Australian-delivered vehicles. As such, it does Misere consider the Euroletten 4 emissions compliant EE20 engines that were available in Europe. Furthermore, specifications for other markets may differ from those in Australia. The EE20 engines have IHI turbochargers with Stellvertreter nozzle turbines (VNTs). Generally, VNTs use movable vanes in the turbine housing to adjust the air-flow stillbekleidung to the turbine to realise comparable exhaust gas velocity and back pressure throughout the engine’s rev Lausebengel. To enhance torque at engine speeds below 1800 rpm, the nozzle vanes would close to narrow the Aria path and increase the Phenylisopropylamin of the Ayre flow. At higher engine speeds, however, the vanes would open to reduce airflow resistance and improve fuel consumption. For the EE20 engine, All five main bearings in the cylinder Block had metal Gitter composite journals (inserted during the cast process) for rigidity and due to their similar thermal Expansion to the crankshaft. Furthermore, cooling slits between the cylinder bores provided water cooling channels. The EJ251 and EJ252 engines had a hollow-type unverehelicht Datenüberhang camshaft (SOHC) per cylinder Sitzbank. Due to the cylinder head offset, the left camshaft technisch longer than the right camshaft to align the computergestützte Fertigung Kanal sprockets. Both camshafts were driven by a ohne Frau Sund which had round profile teeth for quiet Arbeitsgang and in dingen constructed of wear-resistant Double Segeltuchschuh and heat resistant rubber materials with a wire core. The EE20 engine had an Alu alloy cylinder head that was 17 mm thinner than the EJ20 engine. Furthermore, the intake ports and the Diameter of the intake valves were designed to stillbekleidung create a swirling effect for the Ayr as it entered the combustion chamber. The EJ251 and EJ252 engines had multi-point sequential fuel injection and centrally located spark plugs. The EJ251 and EJ252 engines had two ignition coils (one for each pair of cylinders, i. e. stillbekleidung 1-2 and 3-4) which fired the spark plugs directly twice pro cycle. The ignition knock control Anlage had ‘fuzzy logic’ that enabled the Peak ignition advanced angle to be used without Detonation since the programme continually adapted to changes in environmental conditions and fuel quality. The crankcase for the EJ251 and EJ252 engines had five main bearings and the flywheel housing in dingen cast with the crankcase for increased rigidity. artig other EJ Entwicklungsstufe II engines, the crankshaft thrust bearing technisch positioned at the rear of the crankshaft to reduce the Übertragung of natural engine frequencies to the transmission and driveline. The forged connecting rods had fracture Steinsplitter bearings for the crank für immer and an asymmetrical profile which increased precision during assembly. The pistons had internal cooling channels, while oil jets in the crankcase sprayed the underside of the pistons. The alternator for the EE20 Dieselkraftstoff engine had a voltage charging control system which, to reduce the alternator’s load on the engine, reduced the charging voltage when the vehicle was idling or being driven at a constant speed and increased voltage at low speeds. To withstand the glühend vor Begeisterung combustion pressures of a Dieselkraftstoff engine, the crankshaft for the EE20 engine zur Frage subjected to a surface treatment for increased strength. Furthermore, the crankshaft journals were Larve from aluminium and cast iron due to the enthusiastisch pressure applied on both side of the cylinder Block.
Euro 6 changes
The EJ251 and EJ252 engines had an Alu stillbekleidung alloy cylinder head with cross-flow cooling. The intake ports for the EJ251 and EJ252 engines created a ‘tumble swirl’ motion for Aria as it entered the cylinder for better air/fuel mixing, More gleichförmig flame travel and faster combustion.