发明名称 |
DIAGNOSIS DEVICE AND DIAGNOSIS METHOD FOR TURBOCHARGER |
摘要 |
A diagnosis device for a turbocharger, the diagnosis device includes an electronic control unit. The electronic control unit is configured to calculate a turbine expansion ratio as a ratio of a pressure of the exhaust gas flowing into a turbine of the turbocharger to the pressure of the exhaust gas flowing out from the turbine; operate a deterioration evaluation value toward a predetermined one of an increase side and a decrease side when the turbine expansion ratio exceeds a threshold; and determine a replacement timing of a turbine component when a total operation amount of the deterioration evaluation is equal to or larger than a specified value, the total operation amount being an operation amount from an initial value of the deterioration evaluation value. |
申请公布号 |
US2016258317(A1) |
申请公布日期 |
2016.09.08 |
申请号 |
US201615050744 |
申请日期 |
2016.02.23 |
申请人 |
Toyota Jidosha Kabushiki Kaisha |
发明人 |
YAMADA Tomoko;Fujimura Kazushiro;Matsushita Tomohiko;Oota Hirohiko |
分类号 |
F01D21/00 |
主分类号 |
F01D21/00 |
代理机构 |
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代理人 |
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主权项 |
1. A diagnosis device for a turbocharger, the turbocharger mounted on an engine, the turbocharger including a turbine, and the turbocharger being configured to supercharge intake air by driving the turbine with a flow force of exhaust gas of the engine, the diagnosis device comprising
an electronic control unit configured to: calculate a turbine expansion ratio as a ratio of a pressure of the exhaust gas flowing into the turbine to the pressure of the exhaust gas flowing out from the turbine; operate a deterioration evaluation value toward a predetermined one of an increase side and a decrease side when the turbine expansion ratio exceeds a threshold; and determine a replacement timing of a turbine component when a total operation amount of the deterioration evaluation is equal to or larger than a specified value, the total operation amount being an operation amount from an initial value of the deterioration evaluation value. |
地址 |
Toyota-shi JP |