Key Vehicle Electronic System Descriptions

As described earlier, modern vehicles contain electronic components in nearly all vehicle
systems, including those pertaining to powertrain, passenger safety and more. While all of these
systems are important, several merit closer inspection, because they represent growth areas or
because they are critical to current and future vehicles. One of these systems is the powertrain,
which is both absolutely essential for the vehicle to operate and a likely growth area for
electronics due to stricter fuel economy and emissions standards and the evolving mix of
powertrain types (e.g., hybrids, electric, etc.). Another is vehicle communication systems;these
can involve both technologies within vehicles and technology installed on the roadside. These
technologies enable information sharing within a vehicle, between a vehicle and other vehicles,
in mobile devices and in roadside infrastructure. These communication systems contribute to
greater capabilities in the areas of mobility, infotainment and safety, where “mobility” refers to
the ease and efficiency of travel and can include navigational assistance and traffic coordination.
(Infotainment systems include features such as navigation and entertainment.21
3.1 Powertrain and Transmission Controls
) Safety systems
go beyond communications, of course, and include a wide variety of features─from those that

are now standard in vehicles (e.g., air bags)to those that are currently found only in high-end
automobiles (e.g., lane departure warning systems).

Powertrain and Transmission Controls

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