12/26/2023 0 Comments Magic engine full![]() The Bharat Stage Emission Standards (BSES) has recently brought in Bharat Stage 6 or BS6, the sixth iteration of the vehicular emission norms. In this article, we will explore BS4 vs BS6 – the latest additions to the list of emission standards. How? These standards directly mandate controlling air pollutants emitted by the internal combustion engine of vehicles. In fact, these emission standards have been made compulsory by the Government of India for keeping pollution levels under control. The engine includes i-VTEC and VTC technologies and comes mated to a version of Hondas 5-speed automatic with SH-AWD (note: SH-AWD was standard from 2007-2009 and optional from 2010-2012).To combat the rising air pollution levels in India, the Central Pollution Control Board (CPCB) has established a set of regulations known as the Bharat Stage Emission Standards. The added timing control corresponds to the added i in i-VTEC. Variable cam timing technology is included on the intake but not the exhaust cams. The K20Z3 has Hondas traditional performance VTEC (as found on previous generation of engines) on the intake and the exhaust cams. Thus, reducing the 2006 Acura RSX Type S rating from 210 hp (160 kW) to 201 hp (150 kW) on paper. This modified version produces 272 hp and 280 lb-ft of torque. Then the JDM K20A type-R engine block would be returned to the production assembly line to complete the engine building process.Ĭombustion Turbocharger 1 (Except K20C2) Fuel system Direct fuel injection Management ECU Fuel type Gasoline Cooling system Water-cooled Output Power output See left for specific application. In engines such as the K20A2 found in the Acura RSX Type-S, the VTEC system operates on both the intake and exhaust valves, allowing both to benefit from multiple cam profiles.Ī modified K20C engine is used in motorsport, as the Sports Car Club of America Formula 3 and 4 series that run in North America both use a K20C engine, with the Formula 4 engine not having a turbocharger.Ĭombustion Fuel system Fuel injection Management ECU Fuel type Petrol Cooling system Water-cooled Piston Oil Squirters (K24A) Output Power output See left for specific application.ĭimensions Dry weight 403lbs (with gearbox), 275lbs (without gearbox). The VTEC system on engines like the K20A3 only operate on the intake cam at low rpm only one intake valve is fully opened, the other opening just slightly to create a swirl effect in the combustion chamber for improved fuel atomization.Īt high rpm, both intake valves open fully to improve engine breathing. The cylinders have cast iron sleeves similar to the B- and F-series engines, as opposed to the FRM cylinders found in the H- and newer F-series engines found only in the Honda S2000. This system forgoes the use of a conventional distributor-based ignition timing system in favor of a computer-controlled system that allows the ECU to control ignition timings based on various sensor inputs. The engines use a coil-on-plug, distributorless ignition system with a coil for each spark plug. ![]() The K-series engines are equipped with DOHC valvetrains and use roller rockers to reduce friction.
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