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For twin-cam or DOHC engines, VCT was used on either the intake or exhaust camshaft. (Engines that have VCT on both camshafts are now designated as Ti-VCT.↓) The use of variable camshaft timing on the exhaust camshaft is for improved emissions, and vehicles with VCT on the exhaust camshaft do not require exhaust gas recirculation (EGR) as retarding the exhaust cam timing achieves the same ...
N-VTC varies valve timing by rotating the affected camshaft relative to the sprocket; valve lift and duration are not altered. This rotation is achieved when an electric solenoid, controlled by the car's ECU, allows pressurized engine oil to flow into and through the cam and into a slave mechanism, axially advancing camshaft timing relative to ...
The first-generation single VANOS system adjusts the timing of the intake camshaft to one of two positions — e.g. the camshaft is advanced at certain engine speeds. [2] [3] VANOS was first introduced in 1992 on the BMW M50 engine used in 3 and 5 Series. In 1998 single infinitely variable VANOS was introduced on the BMW M62 V8 engine. [2]
The active valve control system (AVCS) is an automobile variable valve timing technology used by Subaru. It varies the timing of the valves by using hydraulic oil pressure to rotate the camshaft, known as "phasing", [1] in order to provide optimal valve timing for engine load conditions. The system is closed loop using the camshaft sensors ...
The early motor didn't have any camshaft position sensor, so wiring was much different. The only problem experienced with this M111 excellent reliability motor is the originally installed Victor Reinz headgasket, which eventually tore apart by age, and made the top lose coolant on the side.
In most piston engines, the camshaft(s) are mechanically connected to the crankshaft. The crankshaft drives the camshaft (via a timing belt, timing chain or gears), which in turn actuates the intake and exhaust valves. [1] These valves allow the engine to inhale air (or an air/fuel mixture) and exhale the exhaust gasses. [2]
The 1.6-liter Beta (Engine code: G4GR) is an in-line, spark-ignition 4-stroke, dual overhead camshaft 16 valve engine and had two (2) variants depending on the vehicle's sub-model. Advertised power was 66 kW/ 89 hp/ 90 PS (ECE) and 126 Nm/ 93 lb-ft of torque or 84 kW/113 hp/114 PS (ECE) with 143 Nm / 105 lb-ft of torque depending on market and ...
The MR18DDT is a 1.8 L (1797 cc) engine, different from the MR18DE and MRA8DE as it has a turbocharged, twin variable valve timing system on both the intake and exhaust valves and uses a diamond-like carbon coating. Bore and stroke is 79.7 mm × 90.1 mm (3.14 in × 3.55 in).