Patent ID: 8727064
Filing Date: 2014-05-20
Classification: B60K,B60L,B60T,B60W,B60Y,F01L,F02B,F02D,F02M,Y02T

Abstract:
1. A method for controlling a transition from air motor operation to internal combustion operation in a hybrid internal combustion engine and air motor system, the hybrid internal combustion engine and air motor system comprising (a) a chamber including at least one intake valve, at least one outlet valve, and a drivable member, (b) an air inlet line including, upstream of the at least one intake valve, an air inlet line valve, (c) an internal combustion engine mode exhaust line comprising an internal combustion engine mode exhaust line valve downstream of the at least one exhaust valve, (d) a compressed air line comprising a compressed air line valve downstream of the at least one exhaust valve and upstream of a reservoir, and (e) an air motor mode exhaust, line comprising an air motor mode exhaust valve downstream of the at least one intake valve and the air inlet line valve, the method comprising transitioning from operation in the air motor mode to operation in the internal combustion engine mode by performing, in order, the steps of: a) partially opening the internal combustion engine mode exhaust line valve; b) partially closing the air motor exhaust line valve; c) partially closing the compressed air line valve; and d) completely opening the air inlet line valve after performing steps a), b), and c); e) changing an intake and exhaust valve opening and closing timing sequence from an air motor timing sequence to an internal, combustion engine timing sequence.