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公开(公告)号：US20150330319A1
公开(公告)日：2015-11-19
申请号：US14277471
申请日：2014-05-14
Applicant: Caterpillar Inc.
Inventor： Chad S. Nelson , Rino Marcon , Kirti C. Tamhane , Hariharan Ramachandran , Amina Naheed , Krishna R. Yejju , Kotaro Naruo , Mark Bright , Travis E. Barnes , Urvish B. Joshi , Ramya Gangishetty
IPC: F02D33/02
CPC classification number: F02D33/02 , F02D17/00 , F02D17/04 , F02D41/0055 , F02D41/008 , F02D41/08 , F02D2200/0414 , Y02T10/47
Abstract: A method of operating an engine includes determining an intake air temperature and an engine speed. The method includes selectively initiating one of a first operating mode, a second operating mode and a third operating mode based on at least the intake air temperature and the engine speed. The first operating mode includes increasing the engine speed progressively by an incremental speed value. The second operating mode includes deactivating at least one Exhaust Gas Recirculation (EGR) cylinder of the engine. The third operating mode includes shutting down the engine.
Abstract translation: 一种操作发动机的方法包括确定进气温度和发动机转速。 该方法包括基于至少进气温度和发动机速度来选择性地启动第一操作模式，第二操作模式和第三操作模式中的一个。 第一操作模式包括逐渐增加发动机速度的增量速度值。 第二操作模式包括停用发动机的至少一个排气再循环（EGR）气缸。 第三种操作模式包括关闭发动机。
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公开(公告)号：US09534546B2
公开(公告)日：2017-01-03
申请号：US14277471
申请日：2014-05-14
Applicant: Caterpillar Inc.
Inventor： Chad S. Nelson , Rino Marcon , Kirti C. Tamhane , Hariharan Ramachandran , Amina Naheed , Krishna R. Yejju , Kotaro Naruo , Mark Bright , Travis E. Barnes , Urvish B. Joshi , Ramya Gangishetty
CPC classification number: F02D33/02 , F02D17/00 , F02D17/04 , F02D41/0055 , F02D41/008 , F02D41/08 , F02D2200/0414 , Y02T10/47
Abstract: A method of operating an engine includes determining an intake air temperature and an engine speed. The method includes selectively initiating one of a first operating mode, a second operating mode and a third operating mode based on at least the intake air temperature and the engine speed. The first operating mode includes increasing the engine speed progressively by an incremental speed value. The second operating mode includes deactivating at least one Exhaust Gas Recirculation (EGR) cylinder of the engine. The third operating mode includes shutting down the engine.
Abstract translation: 一种操作发动机的方法包括确定进气温度和发动机转速。 该方法包括基于至少进气温度和发动机速度来选择性地启动第一操作模式，第二操作模式和第三操作模式中的一个。 第一操作模式包括逐渐增加发动机速度的增量速度值。 第二操作模式包括停用发动机的至少一个排气再循环（EGR）气缸。 第三种操作模式包括关闭发动机。
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公开(公告)号：US20160252033A1
公开(公告)日：2016-09-01
申请号：US15149290
申请日：2016-05-09
Applicant: Caterpillar Inc.
Inventor： Adam D. Dye , Andy Publes , Arthur L. Gilliam , Dustin K. Fee , Kirti C. Tamhane
CPC classification number: F02D41/1497 , F02D17/02 , F02D41/0087 , F02D41/009 , F02D41/3005 , F02D41/401 , F02D2200/021 , F02D2200/101 , Y02T10/44
Abstract: The disclosure provides a method to operate an engine including a first set of cylinders and a second set of cylinders with the help of an engine control module (ECM). The ECM determines a current engine speed, a current engine load, and a current degree of rotation. If the current engine load is below a threshold load that corresponds to the current engine speed, the ECM selects a cylinder cutout strategy. The ECM initiates the cylinder cutout strategy wherein the fuel supply is cutout alternatively between the first set of cylinders and the second set of cylinders at a predetermined degree of rotation. The fuel injection is modified by a predetermined amount to a set of non-cutout cylinders. The ECM deactivates the cylinder cutout strategy when the current engine load exceeds the threshold load that corresponds to the current engine speed.
Abstract translation: 本公开提供了一种在发动机控制模块（ECM）的帮助下操作包括第一组气缸和第二组气缸的发动机的方法。 ECM确定当前的发动机转速，当前的发动机负荷和当前的旋转度。 如果当前发动机负载低于对应于当前发动机转速的阈值负荷，则ECM选择汽缸切断策略。 ECM启动气缸切断策略，其中燃料供应在预定旋转角度处交替地切割在第一组气缸和第二组气缸之间。 燃料喷射被预定量修改为一组非切口滚筒。 当当前发动机负载超过对应于当前发动机转速的阈值负载时，ECM将停用气缸切断策略。
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