公开(公告)号：EP3852265A1

公开(公告)日：2021-07-21

申请号：EP21157204.5

申请日：2019-03-14

申请人： Tula Technology, Inc.

发明人： TRIPATHI, Adya S.

IPC分类号： H02P23/00 ,  H03M3/00

摘要： A variety of methods, controllers and electric machine systems are described that facilitate pulsed control of electric machines (e.g., electric motors and generators) to improve the machine's energy conversion efficiency. Under selected operating conditions, the electric machine is intermittently driven (pulsed). The pulsed operation causes the output of the electric machine to alternate between a first output level and a second output level that is lower than the first output level. The output levels are selected such that at least one of the electric machine and a system that includes the electric machine has a higher energy conversion efficiency during the pulsed operation than the electric machine would have when operated at a third output level that would be required to drive the electric machine in a continuous manner to deliver the desired output. In some embodiments, the second output level is zero torque.

公开(公告)号：EP3798437A2

公开(公告)日：2021-03-31

申请号：EP20200144.2

申请日：2009-07-10

申请人： Tula Technology, Inc.

发明人： TRIPATHI, Adya S. ,  SILVESTRI, Chester J.

IPC分类号： F02D41/00 ,  B60K31/00 ,  F02D41/26 ,  F02D41/30 ,  F02D41/36 ,  F02P5/15 ,  F02D41/04 ,  F02D41/06 ,  F02D41/12 ,  F02D41/14 ,  F02P9/00

摘要： The present invention concerns a method of controlling the operation of an internal combustion engine having at least one working chamber, each working chamber being generally arranged to operate in a succession of working cycles, the method comprising dynamically determining a firing pattern during operation of the engine on a firing opportunity by firing opportunity basis using feedback control to provide a desired engine output; and firing the at least one working chamber in the firing pattern, wherein the firing pattern skips the firing of selected skipped working cycles and fires selected active working cycles. Further, the present invention concerns an engine controller configured to perform the corresponding method.

公开(公告)号：EP2524129A1

公开(公告)日：2012-11-21

申请号：EP11732322.0

申请日：2011-01-11

申请人： Tula Technology, Inc.

发明人： TRIPATHI, Adya S. ,  SILVESTRI, Chester J. ,  SAHANDIESFANJANI, Farzad ,  HAND, Chris ,  PIRJABERI, Mohammad

IPC分类号： F02D17/02

CPC分类号： F02D17/02 ,  F02D41/0087 ,  F02D41/047

摘要： A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. In some aspects, methods and arrangements are described for operating an engine in a throttled skip fire mode. In other aspects, methods and arrangements are described for controlling the operational state of a variable displacement engine.