公开(公告)号：US20190226420A1

公开(公告)日：2019-07-25

申请号：US15578924

申请日：2017-06-02

申请人： Phanindra V. GARIMELLA ,  John L. HOEHNE ,  Ian W. MCGIFFEN ,  Chandan MAHATO ,  Boopathi Singalandapuram MAHADEVAN ,  Pagalavan Mathari BAKTHAVATSALAM ,  Travis Alva ANDERSON ,  CUMMINS INC.

发明人： Phanindra V. Garimella ,  John L. Hoehne ,  Ian W. McGiffen ,  Chandan Mahato ,  Boopathi Singalandapuram Mahadevan ,  Pagalavan Mathari Bakthavatsalam ,  Travis Alva Anderson

IPC分类号： F02D41/40 ,  F02D41/14 ,  F02D41/02 ,  F02D41/04 ,  F02D41/00 ,  F02D41/38

摘要： A method of controlling a fuel injector comprises measuring a pressure in a cylinder of an engine with a pressure sensor and determining at least one of a crank angle and a crank speed with a crank sensor. The method also comprises calculating a net indicated mean effective pressure of the cylinder from the measured value of the pressure sensor and the determined value of the crank sensor. Also, the method comprises adjusting a fueling parameter of a fuel injector for the cylinder in response to the difference between the calculated net indicated mean effective pressure and a reference mean effective pressure indicates a change in power of the engine. Alternatively, the method may adjust the fueling parameter based on a power feedback signal for the engine.

公开(公告)号：US06234149B1

公开(公告)日：2001-05-22

申请号：US09257855

申请日：1999-02-25

申请人： John R. Mills ,  Ward R. Edwards ,  John L. Hoehne ,  David A. Bolis ,  Gary C. Salemme ,  Lawrence H. Becker

发明人： John R. Mills ,  Ward R. Edwards ,  John L. Hoehne ,  David A. Bolis ,  Gary C. Salemme ,  Lawrence H. Becker

IPC分类号： F02M5920

CPC分类号： F02D41/0007 ,  F02D2200/0414 ,  F02D2200/703 ,  Y02T10/144

摘要： An engine control system for optimizing a tradeoff between turbocharger lag and production of exhaust emissions including altitude and intake manifold air temperature compensation includes a turbocharger boost sensor, an engine speed sensor, an ambient pressure sensor and an intake manifold air temperature sensor, each providing appropriate sensor signals to a control computer. The control computer is operable to limit fueling signals supplied to the engine fuel system based on turbocharger boost, engine speed, ambient pressure and intake manifold air temperature to thereby optimize a tradeoff between turbocharger lag and production of black smoke and other exhaust emissions while compensating for changes in altitude and intake manifold air temperature. In one preferred embodiment, the control computer includes a fueling table stored therein which maps boost pressure and engine speed values to appropriate fueling values, an altitude correction table stored therein which maps boost pressure and ambient pressure to appropriate fueling correction values and an intake air temperature correction table store therein which maps intake manifold air temperature values to appropriate intake air temperature correction values. The control computer is operable to limit the fueling signals based on the fueling values from the fueling table, the fueling correction values from the altitude correction table and the fueling correction values from the intake air temperature correction table, to thereby maintain a desired tradeoff between turbocharger lag and production of black smoke and other exhaust emissions while compensating for changes in ambient pressure and intake manifold air temperature.

摘要翻译： 用于优化涡轮增压器滞后与包括高度和进气歧管空气温度补偿的废气排放的产生之间的权衡的发动机控制系统包括涡轮增压器升压传感器，发动机转速传感器，环境压力传感器和进气歧管空气温度传感器，每个提供适当的 传感器信号到控制计算机。 控制计算机可操作以基于涡轮增压器升压，发动机转速，环境压力和进气歧管空气温度来限制供应给发动机燃料系统的加油信号，从而优化涡轮增压器滞后与黑烟和其他废气排放的产生之间的权衡，同时补偿 高度和进气歧管空气温度变化。 在一个优选实施例中，控制计算机包括储存在其中的加油台，其将升压压力和发动机转速值映射到适当的加油值，存储在其中的高度校正表将升压压力和环境压力映射到适当的加油校正值和进气温度 校正表存储器，其将进气歧管空气温度值映射到适当的进气温度校正值。 控制计算机可操作以基于来自加油台的加油值，来自高度校正表的加油校正值和来自进气温度校正表的加油校正值来限制加燃料信号，从而维持涡轮增压器 延迟和生产黑烟和其他废气排放物，同时补偿环境压力和进气歧管空气温度的变化。