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A ceramic engine is an internal combustion engine made from specially engineered ceramic materials. Ceramic engines allow for the compression and expansion of gases at extremely high temperatures without loss of heat or engine damage. [1] Proof-of-concept ceramic engines were popularized by successful studies in the early 1980s and 1990s.
Detroit Diesel and MTU jointly developed the 2000 and 4000 series, with Detroit Diesel leading development of the 2000 and MTU leading the 4000, each of which are named for the per-cylinder displacement in cm 3. [17] Like the Series 149, the 4000 comes in 8V-, 12V-, 16V-, and 20V- configurations.
They are generally diesel engines with combustion chamber parts lined with ceramic thermal barrier coatings. [13] Some make use of titanium pistons and other titanium parts due to its low thermal conductivity [14] and mass. Some designs are able to eliminate the use of a cooling system and associated parasitic losses altogether. [15]
A piston is a component of reciprocating engines. It is located in a cylinder and is made gas-tight by piston rings. Its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In two-stroke engines the piston also acts as a valve by covering and uncovering ports in the cylinder ...
It used dished, forged and coated pistons with an 8.0:1 compression ratio. Compared to the naturally aspirated 4A-GE engine, the only differences for the long block were casting holes for a knock sensor and coolant bypass pipes, lower duration cam timing (232º), the upgraded pistons, different valve covers, and the omission of T-VIS. The first ...
A diesel variation of the 2.0 L (1,998 cc) FE engine which shares its square internal dimensions of 86 mm × 86 mm (3.39 in × 3.39 in) bore and stroke - it is virtually the same block, with identical bell housing pattern and block dimensions. This could be a testament to the F-block's strength as it was over-built for naturally aspirated duty.
The head is machined flat, with recesses only for inlet and exhaust valves, spark plugs, injectors and so on. The combustion chamber itself is contained within a dished depression in the top of the piston. The Heron head is suitable for petrol and diesel engines, for ohv and ohc valve-gear, and for small and large engine displacement capacities.
Uniflow diesel engine, a two-stroke diesel engine with inlet through piston-ported fixed ports in the lower part of the cylinder, and exhaust through valves in the cylinder head. Opposed-piston diesel engines, where two cylinders share opposite ends of the same cylinder. These use piston-controlled ports for both inlet and exhaust.
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