公开(公告)号：US20150354486A1

公开(公告)日：2015-12-10

申请号：US14300827

申请日：2014-06-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Marcus S. Gilbert ,  David S. Mathews ,  Keith M. Lindsey, JR.

IPC: F02D41/04

CPC classification number: F02D41/04 ,  F02D41/0085 ,  F02D41/0097 ,  F02D41/045 ,  F02D41/1498 ,  F02D41/22 ,  F02D2200/04 ,  F02D2200/0614 ,  F02D2200/1004 ,  F02D2200/101 ,  F02D2200/1015 ,  F02D2250/18

Abstract: A control system configured to control an internal combustion engine includes a crankshaft and an engine speed sensor. The crankshaft is rotated in response to combusting a mixture of air and fuel delivered to at least one cylinder included in the internal combustion engine. The engine output speed sensor is configured to output an engine output speed signal indicating a rotational speed of the crankshaft. An engine control module controls an amount of air and fuel delivered to the at least one cylinder and estimates a torque output based on the amount of air and fuel. A torque compensation module is configured to determine at least one weak cylinder based on the engine output speed signal. The torque compensation module is further configured to determine a torque compensation value that adjusts the estimated torque output based on the weak cylinder.

Abstract translation: 构造成控制内燃机的控制系统包括曲轴和发动机转速传感器。 响应于燃烧输送到包括在内燃机中的至少一个气缸的空气和燃料的混合物而使曲轴旋转。 发动机输出速度传感器被配置为输出表示曲轴的转速的发动机输出速度信号。 发动机控制模块控制输送到至少一个气缸的空气和燃料的量，并基于空气和燃料的量来估计扭矩输出。 扭矩补偿模块被配置为基于发动机输出速度信号来确定至少一个弱气缸。 转矩补偿模块还被配置为确定基于弱气缸来调节估计转矩输出的转矩补偿值。

公开(公告)号：US20200248618A1

公开(公告)日：2020-08-06

申请号：US16267499

申请日：2019-02-05

Applicant: GM Global Technology Operations LLC

Inventor： Colby T. Stanley ,  Xiangkun Kong ,  David S. Mathews ,  Nicholas J. Kalweit

IPC: F02B75/18 ,  F02D31/00 ,  F02D13/02 ,  F02D41/00

Abstract: An engine control system of a vehicle includes a cylinder control module configured to: determine a target sequence for at least activating and deactivating cylinders of an engine based on a torque request; and activate and deactivate the cylinders of the engine according to the target sequence. A values module is configured to determine, based on the target sequence, a plurality of coefficients and an offset value. An indicated mean effective pressure (IMEP) determination module is configured to determine an IMEP of a first cylinder based on: the plurality of coefficients; the offset value; and a plurality of engine speeds at a predetermined crankshaft positions, respectively.

公开(公告)号：US20180135544A1

公开(公告)日：2018-05-17

申请号：US15352881

申请日：2016-11-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nicholas J. Kalweit ,  Julian R. Verdejo ,  David S. Mathews

IPC: F02D41/00 ,  F02P9/00 ,  F02P11/06 ,  F02D41/02

Abstract: A method, system, and engine are configured to determine a parameter based on rotational speeds of a crankshaft, over at least three cylinder combustion cycles. The method, system, and engine determine two or more estimated crankshaft rotational speeds at two or more positions in a leading cylinder combustion cycle, two or more estimated crankshaft rotational speeds at two or more positions in a middle cylinder combustion cycle, and two or more estimated crankshaft rotational speeds at two or more positions in a following cylinder combustion cycle. The method, system, and engine are configured to determine a calculated metric based on each of the determined leading estimated crankshaft rotational speeds, the determined middle estimated crankshaft rotational speeds, and the determined following estimated crankshaft rotational speeds. An engine parameter, such as misfire, is then determined based on the calculated metric.

公开(公告)号：US09581100B2

公开(公告)日：2017-02-28

申请号：US14300827

申请日：2014-06-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Marcus S. Gilbert ,  David S. Mathews ,  Keith M. Lindsey, Jr.

IPC: F02D41/00 ,  F02D41/04 ,  F02D41/14 ,  F02D41/22

CPC classification number: F02D41/04 ,  F02D41/0085 ,  F02D41/0097 ,  F02D41/045 ,  F02D41/1498 ,  F02D41/22 ,  F02D2200/04 ,  F02D2200/0614 ,  F02D2200/1004 ,  F02D2200/101 ,  F02D2200/1015 ,  F02D2250/18

Abstract: A control system configured to control an internal combustion engine includes a crankshaft and an engine speed sensor. The crankshaft is rotated in response to combusting a mixture of air and fuel delivered to at least one cylinder included in the internal combustion engine. The engine output speed sensor is configured to output an engine output speed signal indicating a rotational speed of the crankshaft. An engine control module controls an amount of air and fuel delivered to the at least one cylinder and estimates a torque output based on the amount of air and fuel. A torque compensation module is configured to determine at least one weak cylinder based on the engine output speed signal. The torque compensation module is further configured to determine a torque compensation value that adjusts the estimated torque output based on the weak cylinder.

Abstract translation: 构造成控制内燃机的控制系统包括曲轴和发动机转速传感器。 响应于燃烧输送到包括在内燃机中的至少一个气缸的空气和燃料的混合物而使曲轴旋转。 发动机输出速度传感器被配置为输出表示曲轴的转速的发动机输出速度信号。 发动机控制模块控制输送到至少一个气缸的空气和燃料的量，并基于空气和燃料的量来估计扭矩输出。 扭矩补偿模块被配置为基于发动机输出速度信号来确定至少一个弱气缸。 转矩补偿模块还被配置为确定基于弱气缸来调节估计转矩输出的转矩补偿值。