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Nissan Motors uses a straightforward method of naming their automobile engines. The first few letters identify the engine family. The next digits are the displacement in deciliters. The following letters identify features added and are order specific based on the type of feature. The features/letters follow a specific order and not all features are necessarily listed all of the time. The basic, common features follow this general order: (family character(s) ) (engine displacement in deciliters ) () () () () () 1 = Camshaft 2 = Fuel delivery 3 = Power adder 4 = 2nd power adder 5 = Special A good example to start with is the Nissan RB26DETT engine. It belongs to the RB engine family, displaces 26 deciliters (2.6 liters), and the feature letters describe an engine with dual overhead camshafts, electronic port fuel injection and two turbo chargers. The next example is the Nissan SR20DE engine. It belongs to the SR engine family and displaces 20 deciliters (2.0 liters). The feature letters describe an engine with dual overhead camshafts and electronic port fuel injection but leaves off any power adder descriptors because it is a naturally aspirated engine. The popular, (single) turbocharged version of this engine is logically called the SR20DET. Not all features are necessarily described in the name. For example, the SR20VE engine has dual overhead camshafts but the variable valve lift (and timing) design of the camshafts takes precedence in the naming scheme even though the "V" feature designation doesn't necessarily describe a DOHC arrangement. A good example of an engine where not all of the feature designation spots are used is the CA18ET engine. The two features listed being electronic port fuel injection designated with the "E" and the presence of a turbocharger designed with the letter "T". The engine has a single overhead camshaft so there is no "D" listed in the name; the camshaft type designation place being left out completely. Nissan does not have a letter designation for the SOHC configuration so the camshaft configuration type is assumed as SOHC if no letter is present. Lastly, the MR16DDT engine has feature designations that describe an engine with dual overhead camshafts, direct cylinder fuel injection and a single turbocharger. This engine also has variable valve timing, but Nissan does not currently have a letter designation for that feature. ==Straight-3== * 1971–1983 Nissan UD engine — Diesel 3.0 L — UD3 * 2010–present Nissan HR engine — 1.0/1.2 L — HR10DDT, HR10DE, HR12DE, HR12DDR (See Straight-4 below for other HR engines) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of Nissan engines」の詳細全文を読む スポンサード リンク
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