Select Committee on Environmental Audit Written Evidence


APPENDIX 1

TECHNOLOGY


Introduction Year
New CO2 Efficient Technology

1995-96Direct-injection diesel engines.
1997-2000New generation of advanced diesels, notably incorporating commonrail technology:
—  Automated Manual Transmission;
—  Gasoline direct injection (GDI) engine models launched.
2001Two-step variable valve timing:
—  Valve train with roller finger followers (lower friction);
—  Fully variable valve lift and timing;
—  Variable length Intake Manifold;
—  Second generation diesel common rail injection (high pressure);
—  Exhaust gas turbochargers with variable nozzle geometry turbine;
—  Application of advanced diesel technology to smaller engines, and consequently to small cars;

—  Six-speed automatic gearbox;
—  New generation of bio-fuelled vehicles.
2002Fully variable valve lift and timing technology combined with GDI:
—  Variable length intake manifold on small gasoline engines;
—  Fast warm-up cooling system;
—  Torque converter lock-up for first gear on automatic transmissions;
—  Low-viscosity/friction oil across model-range;
—  Friction optimised rear-axle differential;
—  Engine covering/under body panelling for vehicle aerodynamic improvement.
2003Double clutch/Direct Shifting gearbox:
—  Seven-speed fuel-economy optimised automatic transmissions;
—  Common rail injection system with 1600 bar;
—  Unit injector of 2050 bar;
—  Energy management control systems, including load levelling, to reduce engine idle speed;

—  Electro-hydraulic power assisted steering system;
—  Fully electric power assisted steering.
2004New generation turbocharged small displacement diesel enginesintroduced:
—  Variable Twin Turbo technology on diesel engines;
—  Piezo-injection systems on diesel engines;
—  Stop-start with regenerative braking;
—  Second generation friction optimised rear-axle gearbox;
—  Torque converter lock-up for first gear on automatic transmissions across model-range;

—  High efficiency alternator;
—  Regulated electrical fuel pump.
2005Second generation Valvetronic (fully variable valve lift and timing system):
—  Twin-charger technology for gasoline vehicle combined with downsizing of combustion engine;

—  Roll-out of LED technology for high volume segments with benefits concerning electric energy consumption;

—  Hydro-high-pressure forming for high strength structures with weight advantages;

—  Advanced cooling system with electric water pump;
—  Electronically controlled oil pump;
—  Third generation common rail injection system.

March 2007










 
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Prepared 30 July 2007