Nissan MA engine
Nissan MA engine | |
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Overview | |
Manufacturer | Nissan Motors |
Production | 1983-1992 |
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 material | Aluminium |
Cylinder head material | Aluminium |
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.
MA09ERT
The MA09ERT is a series-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.
MA09ERT engine |
- Specifications
- Water-cooled 4-cylinder inline, air-to-air intercooler
- Valve system: SOHC, 2 valves per cylinder
- Displacement: 0.9 L; 56.8 cu in (930 cc)
- Bore: 66 mm (2.60 in)
- Stroke: 68 mm (2.68 in)
- Maximum power: 110 PS (81 kW; 108 hp) at 6500 rpm
- Maximum torque: 13.3 kg⋅m (130 N⋅m; 96 lb⋅ft) at 5200 rpm
- Compression ratio: 7.7:1
- Weight: 111 kg (245 lb)
- Size (length × width × height): 705×575×680 mm
- Specific fuel consumption (net): 255 g/(PS・h) at 1200 rpm
MA10S
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
- Water-cooled inline-4 cylinder
- Displacement: 987 cc (1.0 L; 60.2 cu in)
- Bore and stroke: 68 mm × 68 mm (2.68 in × 2.68 in)
- Compression ratio: 9.5:1
- Maximum power (net): 52 PS (38 kW; 51 hp) at 6000 rpm
- Maximum torque (net): 75 N·m (55 lb·ft) at 3600 rpm
- 1-bbl carburettor
- K10 March G series Middle 2 model MA10S engine photograph image
MA10E
The MA10E was used in the Nissan Saurus Jr.
- Displacement: 1.0 L (987 cc)
- Maximum power: 70 PS (51 kW; 69 hp) at 5600 rpm
MA10ET
The Nissan MA10ET powered the Figaro and K10 March Turbo.
- Displacement: 987 cc (1.0 L; 60.2 cu in)
- Bore and stroke: 68 mm × 68 mm (2.68 in × 2.68 in)
- Maximum power: 85 PS (63 kW; 84 bhp) at 6000 rpm
- Maximum torque: 12.0 kg⋅m (118 N⋅m; 87 lb⋅ft) at 4400 rpm
- Compression ratio: 8.0:1
- Fuel supply device: Nissan Motor ECCS
- Power resource(V-AH): 12-30
- March Turbo Type 1 (A-1) Engine Photograph
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.
- Displacement: 1.2 L (1,235 cc)
- Bore: 71 mm (2.80 in)
- Stroke: 78 mm (3.07 in)
- Maximum Power: 60 PS (44 kW; 59 hp) / 5600 rpm
- Maximum Torque: 94 N⋅m (69 lb⋅ft) / 3600 rpm
- Compression Ratio: 9.0:1
See also
References
- ^ "Nissan March MA09 engine (Japanese)". Minikara Carview. Carview. Retrieved 17 January 2017.
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