公开(公告)号：US20170122237A1

公开(公告)日：2017-05-04

申请号：US15401516

申请日：2017-01-09

Applicant: Tula Technology, Inc.

Inventor： Adya S. TRIPATHI ,  Chester J. SILVESTRI ,  Christopher W. CHANDLER ,  Christopher C. HAND ,  Joshua P. SWITKES ,  Mark A. WILCUTTS ,  Matthew A. YOUNKINS

IPC: F02D41/00 ,  F02D13/06 ,  F02P5/04 ,  F02D41/26 ,  F02D41/30 ,  F02D41/14 ,  F02P5/15 ,  F02B75/02

CPC classification number: F02D41/0087 ,  F02B75/02 ,  F02B2075/027 ,  F02D13/06 ,  F02D17/02 ,  F02D37/02 ,  F02D41/1401 ,  F02D41/26 ,  F02D41/266 ,  F02D41/30 ,  F02D2200/0614 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2400/02 ,  F02P5/045 ,  F02P5/1512 ,  Y02T10/46

Abstract: A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines based on skip fire operation of the engine are described. In one aspect the skip fire decisions are made on a working cycle by working cycle basis. During selected skipped working cycles, the corresponding cylinders are deactivated such that air is not pumped through the cylinder during the selected skipped working cycles. In some implementations, the cylinders are deactivated by holding associated intake and exhaust valves closed such that an air charge is not present in the working chamber during the selected skipped working cycles.

公开(公告)号：US20130298870A1

公开(公告)日：2013-11-14

申请号：US13945289

申请日：2013-07-18

Applicant: Tula Technology, Inc.

Inventor： Adya S. TRIPATHI ,  Chester J. SILVESTRI ,  Christopher W. CHANDLER ,  Christopher C. HAND ,  Joshua P. SWITKES ,  Mark A. WILCUTTS

IPC: F02D17/02

CPC classification number: F02D17/02 ,  F02D41/0087 ,  F02D41/047

Abstract: A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. In one aspect, the spark timing associated with each fired working cycle is based at least in part on the firing history of the fired working chamber.

Abstract translation: 描述了用于在跳火可变位移模式中控制内燃机的操作的各种方法和装置。 通常，发动机被控制为以跳火可变排量模式操作。 在一个方面，与每个燃烧的工作循环相关联的火花正时至少部分地基于燃烧的工作室的击发历史。