| 发明名称 |
SYSTEM AND METHOD FOR CONTROLLING AIR-FUEL RATIO OF CNG ENGINE |
| 摘要 |
A system includes a compressed natural gas (CNG) engine, a three-way catalyst (TWC), a first oxygen sensor connected to the CNG engine, and a second oxygen sensor connected to the three-way catalyst. A method for controlling an air-fuel ratio of the CNG engine includes determining whether or not the CNG engine and the three-way catalyst are normal by measuring output voltages of the first and second oxygen sensors, determining whether or not the three-way catalyst is aged, and adjusting the air-fuel ratio of the CNG engine based on a result of the step of determining whether or not the three-way catalyst is aged |
| 申请公布号 |
US2016108833(A1) |
申请公布日期 |
2016.04.21 |
| 申请号 |
US201514665965 |
申请日期 |
2015.03.23 |
| 申请人 |
HYUNDAI MOTOR COMPANY |
发明人 |
CHOUNG Jin Woo |
| 分类号 |
F02D41/00;F01N11/00;F02B43/10;F02D41/14;F02B43/12;F01N3/10;F02D41/02 |
主分类号 |
F02D41/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for controlling an air-fuel ratio of a CNG engine, in which a first oxygen sensor is connected to the CNG engine and a second oxygen sensor is connected to a three-way catalyst, the method comprising:
determining whether or not the CNG engine and the three-way catalyst are normal by measuring output voltages of the first and second oxygen sensors; determining whether or not the three-way catalyst is aged; and adjusting the air-fuel ratio of the CNG engine based on a result of the step of determining whether or not the three-way catalyst is aged. |
| 地址 |
Seoul KR |
