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All mazda b-series trucks Mazdarotary enginerotary engines are essentially a single family - they all derive from the firstrotary engineexperiments in the early 1960smazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaOver the years, displacement has been increased (somewhat) mazda b-series trucks , and turbocharging has been added to great effect mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThis is the engine family that made Mazdafamousmazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
In auto racingand for Japanese tax purposes, the displacement of rotary mazda b-series trucks engine engines is defined as the equivalent of 1.5 times the nominal displacementmazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaSo the 1.3 L 13B engines count as just under 2.0 L for these purposes mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
rotary enginemazda b-series trucks engines can be classified by their rotor size in terms of width (diameter) and depth (thickness)mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThese metrics function similarly to the bore and stroke measurements of a piston engine mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridamazda b-series trucks Nearly all Mazdaproductionrotary engineengines share a single rotor diameter: 105 mm (4.1 in) with a 15 mm (0.6 in) crankshaft offsetmazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThe only engine to diverge from this formula mazda b-series trucks was the rare 13A, which used a 120 mm (4.7 in) diameter and 17.5 mm (0.7 in) offset mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
40A
Mazda's first prototyperotary enginewas the 40A, a single-rotor engine mazda b-series trucks very much like the NSU KKM400mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaAlthough never produced in volume, the 40A was a valuable testbed for Mazdaengineers, and quickly demonstrated two serious challenges to the feasibility of the design: mazda b-series trucks chatter marks in the housing and heavy oil consumptionmazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThe chatter marks, nicknamed devil's fingernails, were caused by improper sealing at the apex of the rotor mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThe oil consumption problem was mazda b-series trucks addressed with heat-resistant rubber oil seals at the sides of the rotors mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThis early engine had a rotor diameter of 90 mm (3.5 in) , an offset of 14 mm (0.6 in) mazda b-series trucks , and a depth of 59 mm (2.3 in) mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
L8A The very first MazdaCosmo prototype used a 798 cc L8A two-rotorrotary enginemazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThe engine and car mazda b-series trucks were both shown at the 1963 Tokyo Motor Show mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaHollow cast iron apex seals reduced vibration and thus chatter marks mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaIt used dry-sump lubrication mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaRotor diameter was up from the mazda b-series trucks 40A to 98 mm (3.9 in) , but depth dropped to 56 mm (2.2 in) mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
One-, three-, and four-rotor derivatives of the L8A were also created for experimentation mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
mazda b-series trucks 10A The 10A series was Mazda's first productionrotary engine, appearing in 1965mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaIt was a two-rotor design, with each displacing 491 cc for a total of 982 cc mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThese mazda b-series trucks engine featured the mainstream rotor dimensions with a 60 mm (2.4 in) depth mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
The rotor housing was made of sand-cast aluminum plated with chrome, while the aluminum sides were sprayed with mazda b-series trucks molten carbon steel for strength mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaCast iron was used for the rotors themselves, and their eccentric shafts were of expensive chrome-molybdenum steel mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThe addition of aluminum/carbon apex seals addressed the chatter mazda b-series trucks mark problem mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
0810 The first 10A engine was the 0810, used in the Series I Cosmo from May, 1965 through July, 1968 mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThese cars, and their revolutionary engine, were mazda b-series trucks often called L10A modelsmazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaGross output was 110 hp (82 kW) at 7000 RPM and 130 Nm (96 ft.lbf) at 3500 RPM, but both numbers were probably optimistic mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
The 10A mazda b-series trucks featured twin side intake ports per rotor, each fed by a one of four carburetor barrels mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaOnly one port per rotor was used under low loads for added fuel economy mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaA mazda b-series trucks single peripheral exhaust port routed hot gas through the coolest parts of the housing, and engine coolant flowed axially rather than the radial flow used by NSU mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaA bit of oil was mazda b-series trucks mixed with the intake charge for lubrication mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks florida
The 0810 was modified for the racing Cosmos used at Nürburgring mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaThese engines had both side- and peripheral-located intake ports switched with a mazda b-series trucks butterfly valve for low- and high-RPM use (respectively) mazda b-series 1986-1993, mazda b-series trucks, mazda b-series trucks floridaBy: Jon beal |
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