US Patent No. 9,394,872

METHOD OF CONTROLLING THE STOPPING AND STARTING OF AN ENGINE OF A MOTOR VEHICLE


Patent No. 9,394,872
Issue Date July 19, 2016
Title Method Of Controlling The Stopping And Starting Of An Engine Of A Motor Vehicle
Inventorship Stephen Howell, Norwich (GB)
Richard John Hippley, Canton, MI (US)
Assignee Ford Global Technologies, LLC, Dearborn, MI (US)

Claim of US Patent No. 9,394,872

1. A control system for an engine of a motor vehicle having an inlet manifold in which is mounted a throttle valve to vary
the flow of air to the engine, comprising:
a pressure sensor configured to sense the absolute pressure in an inlet manifold of the engine downstream from the throttle
valve;

a number of inputs to a control module providing signals indicative of when the engine should be stopped and started and the
speed of the engine;

an actuator coupled to the throttle valve; and
a starter device configured to start the engine;
where the control module is operable to initiate an engine shut-down and close the throttle valve in the inlet manifold of
the engine when the inputs indicate that an engine shut-down is signalled and is further operable to restart the engine using
the starter device during the shut-down if the inputs indicate that starting is signalled, the engine speed is between predefined
upper and lower limits and the absolute pressure sensed by the pressure sensor indicates that the absolute pressure in the
inlet manifold of the engine is below a predefined limit.