Nissan MA engine

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Nissan MA engine
1989 Nissan Micra 1.2L engine (6638378041).jpg
Overview
Manufacturer Nissan Motors
Production1983-1992
Layout
Configuration Inline-4
Displacement 0.9 L (930 cc)
1.0 L (987 cc)
1.2 L (1,235 cc)
Cylinder bore 66 mm (2.60 in)
68 mm (2.68 in)
71 mm (2.80 in)
Piston stroke 68 mm (2.68 in)
78 mm (3.07 in)
Cylinder block materialAluminium
Cylinder head materialAluminium
Valvetrain SOHC 2 valves x cyl.
Compression ratio 7.7:1, 8.0:1, 9.0:1, 9.5:1
Combustion
Turbocharger Single turbocharger (MA10ET)
Twincharger (MA09ERT)
Fuel system Fuel injection (MA09ERT, MA10E, MA10ET)
Carburetor (MA10S, MA12S)
Fuel type Gasoline
Cooling system Water cooled
Output
Power output 50–110 PS (37–81 kW; 49–108 hp)
Torque output 75–130 N⋅m (55–96 lb⋅ft)
Dimensions
Dry weight 111 kg (245 lb)
Chronology
Successor Nissan CG engine

The MA is a straight-4 SOHC 0.9 L, 1.0 L, or 1.2 L engine first introduced in 1982 by Nissan, intended primarily for the K10 series Micra/March model. It shares design similarities with the older E engine, with an 8-valve hemispherical cylinder head but differs in that it uses an aluminium cylinder block. Unusually, the specified ignition timing for the MA10 running on the specified 90 RON gasoline was 2 degrees after top dead centre, reflecting a very high flame speed in the compact combustion chambers.

Contents

MA09ERT

The MA09ERT is a twin-charged design (possessing both a turbocharger and a supercharger), an unusual design, particularly for Japanese vehicles. [1] It powered the March Superturbo, March R, and the March Superturbo R.

The "Nissan PLASMA" (Powerful & Economic, Light, Accurate, Silent, Mighty, Advanced) improved performance and response by adding a supercharger to the (already turbocharged) MA10ET engine, which is a four-cylinder water-cooled OHC engine with a V-type valve arrangement and hemispherical combustion chambers, with sequential fuel injection.

The supercharger improved the response and the output in the low-rpm region (where turbochargers are typically less effective), and a new larger HT10 turbocharger aimed to improve output in the high-rpm regions. An intercooler and an updated intake manifold were added, the latter having a much larger throttle body and improved fuel rail. The result was an increase in output to 110 PS (81 kW; 108 hp) from 85 PS (63 kW; 84 hp), and a much broader range of torque. Other changes included a reduction of engine capacity from 987 cc to 930 cc; this strengthened the engine by increasing the bore wall thicknesses by 1 mm, and allowed cars using it to enter sub-1300 cc competition classes not otherwise possible due to conversion factors applied to forced induction engines.

The first prototypes of these engines were installed in the March Superturbo R/March R (EK10FR type) in 1988; shortly thereafter the engine was installed in the March Superturbo.

The MA09ERT was the first twincharged engine available in Japan; series charging combines the increased low-speed torque of supercharging with the increased high-speed torque and power of turbocharging. The presence of the supercharger also minimizes the effects of turbo lag.

St-engine-bay-cropped.jpg
MA09ERT engine
Specifications

MA10S

MA10S engine from a '90 Nissan Micra Nissan Micra 1.0 Litre In-Line 4 Engine.JPG
MA10S engine from a '90 Nissan Micra

The MA10S is an engine with an electronically controlled carburetor. It was used in the Be-1 and 1982–1992 Micra (K10) and Pao. It has a hemi-head and, unusually, the spark is fired after top dead centre because of the very high flame speed in a compact engine with this head design. Compression in the 50 PS (37 kW) version was relatively low so that it was able to run on 90 RON petrol where available.

Specification

MA10E

The MA10E was used in the Nissan Saurus Jr.

MA10ET

MA10ET engine Figaro-bay.JPG
MA10ET engine

The Nissan MA10ET powered the Figaro and K10 March Turbo.

MA12S

The MA12S is the designation for the larger 1.2 L (1,235 cc) engine, featuring an enlarged bore as well as stroke. It was used in the Nissan Micra K10.

See also

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References

  1. "Nissan March MA09 engine (Japanese)". Minikara Carview. Carview. Retrieved 17 January 2017.