Turbine overspeed protection
US-2024368999-A1 · Nov 7, 2024 · US
Diagnosis device and diagnosis method for turbocharger
US2016258317A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016258317-A1 |
| Application number | US-201615050744-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 23, 2016 |
| Priority date | Mar 2, 2015 |
| Publication date | Sep 8, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
What is claimed is: 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. 2 . The diagnosis device according to claim 1 , wherein the electronic control unit is configured to operate the value of the deterioration evaluation value by a predetermined value every time the turbine expansion ratio exceeds the threshold. 3 . The diagnosis device according to claim 1 , wherein the electronic control unit is configured to operate the value of the deterioration evaluation value to be increased as a difference between the threshold and the turbine expansion ratio increases when the turbine expansion ratio exceeds the threshold. 4 . The diagnosis device according to claim 1 , wherein the specified value is lower at a low atmospheric pressure than at a high atmospheric pressure. 5 . A diagnosis method 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 method comprising: calculating 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; operating 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 determining 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.
Assignees
Inventors
Classifications
- F01D21/003Primary
Arrangements for testing or measuring (for measuring vibrations G01H) · CPC title
- G01M15/04Primary
Testing internal-combustion engines · CPC title
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Frequently asked questions
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- What does patent US2016258317A1 cover?
- 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…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01D21/003. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Sep 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).