| 词条 | Nissan MA09ERT engine |
| 释义 |
The MA09ERT is a mass-produced SOHC internal combustion engine manufactured by Nissan Motors. It is a series-charged design (possessing both a turbocharger and a supercharger), seldom seen in Japanese vehicles.[1] DescriptionThe "Nissan PLASMA" (Powerful & Economic, Light, Accurate, Silent, Mighty, Advanced) MA09ERT was based on the K10ET engine; Nissan attempted to improve 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 110ps (roughly 108bhp) from 74ps, and a much broader range of torque. Other changes included a reduction of engine capacity from 988 cc to 930 cc; this strengthened the engine by increasing the bore wall thicknesses by 1 mm, and allowed cars using it to enter competition classes not otherwise possible due to rules on forced induction. The first prototypes of these engines were installed in the March Superturbo R/March R (EK10FR type) in 1988, shortly after the engine was installed in the March Superturbo. The MA09ERT was the first series-charged 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 mimizes the effects of turbo lag. SpecificationsEngine serial code: MA09ERT Water-cooled 4-cylinder inline, air-air intercooler Capacity: 930 cc Combustion chamber shape: hemispherical Valve system: SOHC Bore × stroke: 66.0×68.0 mm Compression ratio: 7.7 Compression pressure: Max power (net): 110 PS (81 kW) at 6400 rpm Max torque (net): 13.3 kgf·m (130 N·m) at 4800 rpm Specific fuel consumption (net): 255 g/(PS･h) at 1200 rpm Size (length × width × height): 705×575×680 mm Maintenance weight: about 111 kg (manual transmission) Valve timings
Valve clearances Hot
Idle rpm: M/T 750 and A/T 850 Ignition timing at idle: 15° BTDC Oil SystemCold-weather model and 7.5 standard/W-30(SF class only for turbo) Recommended oil grade: [turbo X]. 7.5W-30. (SG class for Nissan March Superturbo, SF for the Nissan March R) Oil filter capacity: ~0.2 L Shinteso MT150 made of NOK Cruba Coolant capacity: ~4.0L Exhaust gas purifier specificationsFuel supply device: Nissan Motor NISSAN ECCS (Electronic Concentrated engine Control System) Starting aids: Bimetal type air regulator Air heating: Warm water heating on intake manifold. Igniter: No point of contact type Emission-reduction device: 3-way Catalyst type (monolith) and Falcat device Catalytic converter capacity: 0.5L Maintenance target value: Idle CO/HC density of below 0.1% and 50 ppm respectively. Air-fuel ratio control system: O2 sensor + ECCS control unit Ignition timing controller/control of Sscac: Electronic Exhaust temperature warning device (preset temperature ℃): Fuse type (940) Fuel evaporation (Ebapo) gas control device: Canister type Crankcase emission control system: Close type. Engine sizeCylinder block height (From the crank shaft center. ): 177 mm Cylinder block length: 360 mm Pitch between boas: P 79 mm Cylinder boa diameter: D 66 mm Stroke length: S 34 mm Crank shaft Journal diameter: bj 45 mm Crank shaft Pin diameter: db 40 mm Crank shaft The total length: L 398 mm Piston compression height: C 26.5 mm Conrod center spacing: Lc 114.5 mm Cylinder liner meat thickness: 3.5 mm Piston/piston pinConstruction material: Aluminum alloy Skirt outside diameter: 65.967 mm Height: 51 mm Compression height: 26.5 mm Convex (concave) height of crown: 4.0 mm Crown irregularity capacity: 17.5 mm Pin length: 58 mm Outside diameter: 17.5 mm Engagement method of pin and Conrod: interference fit Piston ringThe top B×T: 1.5 mm×2.5mm Outer shape: Barrel force Surface treatment: Nitride processing Second base B×T: 1.5 mm×2.9mm Outer shape: Taper Surface treatment: Chrome plating Oil B×T: 2.8 mm×2.8mm Conrod/ConroddobearingConrod center spacing: 14.5 mm Large edge diameter: (D) 43 mm Small edge diameter: (b)17.5 mm (push inside diameter) Width of large edge: (B) 20.0 mm Width of small edge: (b) 20.0 mm Inside diameter of bearing: 40 mm Width: 17 mm Bolt Size of screw: M8 Length under neck: 44 mm Assembly weight: ~390 grams Engagement method of piston pin: interference fit Crank shaft specificationTotal length: L 398.7 mm Pin diameter: dp 40 mm Journal diameter: dj 45 mm Stroke: S 34 mm Valve, valve guide and valve seat (intake/exhaust valves)Valve diameter: φ35 mm / φ30 mm Stem diameter: φ7 mm / φ7 mm Valve springIntake/exhaust Line diameter: 3.8 mm / 3.8 mm Average of coil level 23.8 mm / 23.8 mm Installation load: 16.5 kg / 16.5 kg Travel: 40.6 mm / 40.6 mm Oil pump rotational speed: 750/1000/3000 rpm Exhalation pressure: ~2-4 kg/c㎡ Injection valve opening pressure: 3.5～4.0 kg/c㎡ Camshaft specificationPart Intake/exhaust Operation angle: 62/62 degrees Amount of cam lift: 5.5/5.6 mm Central angle: 23/17 degrees Overlap: 28 degrees Timing belt and sprocket specificationSprocket teeth on camshaft: 36 Sprocket teeth on water pump: 19 Sprocket teeth on crank: 18 Timing belt teeth: 91 See also
External links1. ^{{cite web|title=Nissan March MA09 engine (Japanese)|url=http://minkara.carview.co.jp/userid/139692/car/61409/75311/note.aspx|website=Minikara Carview|publisher=Carview|accessdate=17 January 2017}} {{nissan}} 1 : Nissan engines |
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