公开(公告)号：US20170350331A1

公开(公告)日：2017-12-07

申请号：US15171931

申请日：2016-06-02

Applicant: Tula Technology, Inc. ,  FCA US LLC

Inventor： Mark A. SHOST ,  Ihab S. SOLIMAN ,  James J. DALEY

IPC: F02D41/00 ,  F02D41/26 ,  F02D29/02

CPC classification number: F02D41/0085 ,  F02D13/06 ,  F02D17/00 ,  F02D17/02 ,  F02D29/02 ,  F02D41/008 ,  F02D41/0087 ,  F02D41/26 ,  F02D2041/0012 ,  F02D2200/1004

Abstract: In one aspect, a method is described. An operational engine torque is calculated. The engine is operated in a skip fire manner to deliver the operational engine torque. A reference engine torque is calculated using a torque model. The torque model involves estimating torque at a working chamber level. The reference engine torque is compared to the calculated operational engine torque to assess the accuracy of the operational engine torque calculation. Various embodiments of the present invention involve software, devices, systems and engine controllers that are related to one or more of the above operations.

公开(公告)号：US20210199061A1

公开(公告)日：2021-07-01

申请号：US17183856

申请日：2021-02-24

Applicant: Tula Technology, Inc.

Inventor： Jerry F. FUSCHETTO ,  Matthew A. YOUNKINS ,  Ihab S. SOLIMAN ,  Mark A. WILCUTTS ,  Steven E. CARLSON ,  Louis J. SERRANO

IPC: F02D41/00 ,  F01N11/00 ,  F02D13/06 ,  F01N9/00 ,  F02D41/12

Abstract: Various methods and arrangements for improving fuel economy and noise, vibration, and harshness (NVH) in a skip fire controlled engine are described. An engine controller dynamically selects a gas spring type for a skipped firing opportunity. Determination of the skip/fire pattern and gas spring type may be made on a firing opportunity by firing opportunity basis.

公开(公告)号：US20180266347A1

公开(公告)日：2018-09-20

申请号：US15982406

申请日：2018-05-17

Applicant: Tula Technology, Inc.

Inventor： Jerry F. FUSCHETTO ,  Matthew A. YOUNKINS ,  Ihab S. SOLIMAN ,  Mark WILCUTTS

IPC: F02D41/00 ,  F02D13/06 ,  F02D13/02

CPC classification number: F02D41/0087 ,  F02D13/0207 ,  F02D13/06 ,  F02D41/0085 ,  F02D41/123 ,  F02D41/1406 ,  F02D2041/0012 ,  F02D2041/1412 ,  F02D2041/1433 ,  F02D2200/1004 ,  F02D2250/18 ,  Y02T10/18

Abstract: Various methods and arrangements for improving fuel economy and noise, vibration, and harshness (NVH) in a skip fire controlled engine are described. An engine controller dynamically selects a gas spring type for a skipped firing opportunity. Determination of the skip/fire pattern and gas spring type may be made on a firing opportunity by firing opportunity basis.

公开(公告)号：US20150367830A1

公开(公告)日：2015-12-24

申请号：US14743581

申请日：2015-06-18

Applicant: Tula Technology Inc.

Inventor： Ihab S. SOLIMAN ,  Mark A. SHOST

IPC: B60W20/00 ,  F02P5/15 ,  B60W10/06 ,  F02D17/02

CPC classification number: B60W20/00 ,  B60W10/06 ,  F02D17/02 ,  F02D29/02 ,  F02D41/3058 ,  F02D2200/0406 ,  F02N11/04 ,  F02N11/0829 ,  F02N2011/0896 ,  F02N2200/022 ,  F02P5/1506 ,  Y02T10/46 ,  Y02T10/48 ,  Y10S903/905

Abstract: A variety of methods and arrangements for implementing a start/stop feature in a skip fire engine control system are described. In one aspect, the implementation of the start/stop feature involves automatically turning off an internal combustion engine under selected circumstances during a drive cycle. A determination is made that the engine should be restarted. During the engine startup period, the engine is operated in a skip fire manner such that a desired engine speed is reached.