公开(公告)号：US06354077B1

公开(公告)日：2002-03-12

申请号：US09488632

申请日：2000-01-20

申请人： Kenneth John Behr ,  Brent Edward Sealy ,  Richard Andrew Booth

发明人： Kenneth John Behr ,  Brent Edward Sealy ,  Richard Andrew Booth

IPC分类号： F01N300

CPC分类号： F02D41/0082 ,  F02D41/1443

摘要： A method and system for adjusting a fuel injection amount in one of two groups of cylinders in an internal combustion engine using feedback signals generated by oxygen sensors coupled to both groups of cylinders. The claimed invention includes first and second groups of engine cylinders coupled to first and second exhaust banks respectively. The first exhaust bank includes a catalyst and at least a pre-catalyst EGO sensor for generating a first feedback signal. The second exhaust bank includes a catalyst and a post-catalyst EGO sensor for generating a second feedback signal. A controller calculates desired air/fuel ratio values for the first group of cylinders based on the first feedback signal. The controller also calculates desired air/fuel ratio values for the second group of cylinders based on the first feedback signal and the second feedback signal. The controller adjusts the level of liquid fuel injected into the groups of cylinders based on the calculated air/fuel ratio values.

摘要翻译： 一种用于使用由耦合到两组气缸的氧传感器产生的反馈信号来调节内燃机中的两组气缸中的一组中的燃料喷射量的方法和系统。 所要求保护的发明包括分别耦合到第一和第二排气排的第一组和第二组发动机气缸。 第一排气组包括催化剂和至少一个用于产生第一反馈信号的催化剂前EGO传感器。 第二排气组包括用于产生第二反馈信号的催化剂和催化后EGO传感器。 控制器基于第一反馈信号计算第一组气缸的期望空气/燃料比值。 控制器还基于第一反馈信号和第二反馈信号计算第二组气缸的期望的空气/燃料比值。 控制器根据计算的空气/燃料比值来调节喷射到气缸组中的液体燃料的液位。