Patent ID: 9239017
Filing Date: 2016-01-19
CPC Classification: F02D,Y02T

Claim Text:
1. A vehicle system comprising: a stop-start command module configured to detect an autostop request and generate a mode signal based on the autostop request; a cylinder control module configured to sequentially disable cylinders of an engine during an autostop mode based on the mode signal, wherein the cylinders of the engine include respective intake valves and exhaust valves, and wherein the cylinder control module is configured to maintain the intake valves in a closed state and the exhaust valves in an open state during the autostop mode and during a plurality of cycles of a crankshaft of the engine; a timer module configured to (i) measure an amount of time that a speed of the engine is equal to 0 during the autostop mode, and (ii) based on the measured amount of time, determine whether the speed of the engine is equal to 0 for a predetermined period during the autostop mode, wherein the timer module is configured to store a first position of the crankshaft in response to the speed of the engine being equal to 0 for at least the predetermined period; and a crankshaft module configured to determine a second position based on the first position during an autostart mode.