:The L-Series power unit commenced production in January 1995 and was the first in-house designed and manufactured d.i. Diesel for use in Rover Cars applications. The unit is extremely versatile and has been fitted in the Land Rover Freelander.
The current engine is intercooled and has an electronically controlled injection system that uses Bosch injection equipment. It is this version that is used in the Rover 25, 45 and MG ZR, ZS.
L Series Engine
The engine is extremely environmentally friendly in terms of its emissions. Firstly it is quiet in operation owing to its two stage fuel injection & ECU controlling fuel and timing. Secondly the engine currently satisfies ECD IIl derogated Diesel emissions legislation when installed with an appropriate specified oxidation catalyst. Sensors around the engine consistently give feedback to the ECU regarding injection timing, engine speed, load, fuel and coolant temperature, boost pressure etc to ensure that optimum running conditions are maintained.
The core engine is a conventional four cylinder with 2 valves per cylinder operated by a single overhead camshaft and hydraulic tappets. The block is cast iron with aluminium alloy head and sump. An Allied Signal GT15 turbo charger supplies boosted air. A fully modulated, water cooled, Exhaust Gas Recirculation (EGR) system is incorporated into the intake/exhaust system.
All ancillaries (PAS, aircon, water pump, vac pump, alternator) are all driven off a single poly-vee-belt drive with autotensioner. Camshaft and injection pump drive is via multi-toothed belts and manual tensioners.
