Rover G-Series
| Rover G-Series | |
|---|---|
| Overview | |
| Manufacturer | Sonalika |
| Production | 2007–present |
| Combustion chamber | |
| Configuration | Inline-4 Diesel engine |
| Displacement | 1994 cm3 |
| Cylinder bore | 84.5 mm |
| Piston stroke | 88.9 mm |
| Cylinder block alloy | Cast iron |
| Cylinder head alloy | Aluminium |
| Valvetrain |
SOHC DOHC |
| Compression ratio | 17.0:1-19.5:1 |
| Combustion | |
| Turbocharger | 1 turbocharger with intercooler |
| Fuel system | Common rail |
| Fuel type | Diesel |
| Cooling system | Water-cooled |
| Output | |
| Power output | 75-90 kW |
| Torque output | 220-285 N·m |
| Chronology | |
| Predecessor |
Rover L-Series BMW M47 |
The Rover G-Series engine is an inline-4 common-rail diesel engine designed and engineered by Powertrain Ltd, a sister company to MG Rover Group, and has been produced by Indian automotive multinational Sonalika Group since 2007.
The Rover G-Series is a water-cooled and turbocharged inline four-cylinder diesel engine with common-rail injection. It is based upon the Rover L-Series engine. The block is made of cast iron with an aluminium cylinder head. The engine uses an engine management system made by Siemens using common-rail injection with an injection pressure of 1600 bar. It uses a turbocharger and intercooler. 8-valve and 16-valve iterations of the engine are produced, differing in valvetrain and subsequent cylinder head design.
It is marketed in India by Sonalika subsidiary ICML as the 2.0 CRD-FI BS IV.
The first production G-Series was an 8-valve introduced in the 2007 ICML Rhino in collaboration with MG Rover and additionally used in the 2012 Chevrolet Tavera Neo 3. Each cylinder has one inlet and one exhaust valve and a single belt-driven overhead camshaft.
The first production 16-valve engine first appeared in the 2012 ICML Extreme. Each cylinder is equipped with two inlet and exhaust valves and two belt-driven overhead camshafts.
The G-Series engine development work began in 2002, out of the need at MG Rover Group to replace both the common-rail M47R engine in the Rover 75 and MG ZT and the pump-injector L-Series engine in the Rover 25, Rover 45, MG ZR and MG ZS.
The engine, known as Galileo, spent three years in development prior to MG Rover Group’s collapse in 2005. To be used across the MG Rover Group range of cars, with the exception of the TF sports car, the new engine’s targets were to emulate the BMW M47R in power, torque and refinement and meet Euro 4 emissions compliance. To achieve these targets, MG Rover Group engineers introduced a new cylinder head, valves, pistons and a Siemens engine management system using a common-rail system equipped with the latest injector technology available at the time to the L-Series’ existing architecture, carrying over the cylinder block and sump. A new acoustic engine cover was designed for the engine. The throttle system was redesigned and relocated from the engine bay to the top of the throttle pedal. However, due to ongoing throttle calibration throughout development, the engine was reportedly hard to start in cold conditions. Engineers let the engine warm up before using it.
According to former MG Rover Group homologation engineer Nic Fasci, the G-Series engine met its refinement target: “You could park an M47 and G-Series [Rover 75] next to each other, set them idling and ask people to choose which was which, and everyone got it wrong. G-Series was much quieter at idle.”
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Wikipedia