Abstract: A system includes an air/fuel imbalance (AFIM) control module that determines a position of a wastegate, selectively opens the wastegate in response to a determination that the wastegate is not in a desired open position, and selectively generates an enable signal in response to a determination that the wastegate is in the desired open position. An AFIM calculation module receives an oxygen signal from an oxygen sensor positioned in fluid communication with exhaust flow from the wastegate and selectively calculates an AFIM in a cylinder bank of an engine based on the oxygen signal and the enable signal generated by the AFIM control module.

Abstract: A control system for an engine includes a first spark control module and a second spark control module. The first spark control module retards spark timing for M of N cylinders of the engine to a first spark timing during a period before deactivating or after reactivating the M cylinders, wherein M is an integer greater than or equal to one, and wherein N is an integer greater than M. The second spark control module advances spark timing for (N?M) active cylinders of the engine to a second desired spark timing during the period before deactivating or after reactivating the M cylinders, wherein the second spark timing is greater than the first spark timing.

Abstract: A control system for an engine includes a first spark control module and a second spark control module. The first spark control module retards spark timing for M of N cylinders of the engine to a first spark timing during a period before deactivating or after reactivating the M cylinders, wherein M is an integer greater than or equal to one, and wherein N is an integer greater than M. The second spark control module advances spark timing for (N?M) active cylinders of the engine to a second desired spark timing during the period before deactivating or after reactivating the M cylinders, wherein the second spark timing is greater than the first spark timing.

Abstract: A seating arrangement (9) comprises at least seat (11) and a second seat (12) arranged side by side. At least part of a seat member (12a) of the second seat (12) is displaceable in an up-down direction relative to the seat member (11a) of the first seat (11), and at least part of the seat back (12b) of the second seat (12) is displaceable in a forward-rearward direction relative the seat back (11b) of the first seat (11) so as to allow movement of at least one of the seats (11, 12) in a sideways direction toward the other. The seat member (12a) and the seat back (12b) of the second seat (12) may be foldable, in particular to form at lateral restraint and/or an arm rest, when the first and second seats (11, 12) are moved toward each other. Alternatively, the seat member (12a) and the seat back (12b) of the second seat (12) may be displaceable to below the seat member (11a) and behind the seat back (11b) of the first seat (11) respectively, when the first and second seats (11, 12) are moved toward each other.