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compensate by over-boosting another component. This is known as a fail-safe
mode and the driver is informed via a warning light. Overall, this active cooling
system also reduces the power consumed by the water pump.
9.4.7 Engine trends – spark ignition
In Europe during 2003, vehicles with compression ignition (CI) engines started
to outsell the spark ignition (SI) versions. However, because of this competition,
as well as that from alternative fuel vehicles, engineers are making more
developments to the SI engine. More power, reduced consumption and emissions,
together with more efcient packaging are the key challenges ...