Powertrain for Hybrid Vehicle Having Dedicated EGR
US-2015377188-A1 · Dec 31, 2015 · US
Exhaust gas recirculation cooler protection system and method
US9309823B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9309823-B2 |
| Application number | US-201414153401-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 13, 2014 |
| Priority date | Jan 13, 2014 |
| Publication date | Apr 12, 2016 |
| Grant date | Apr 12, 2016 |
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Abstract
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A system and method of operating an exhaust gas recirculation (EGR) system of a vehicle includes controlling an EGR valve actuable between an EGR enabled position and an EGR disabled position, such that with the EGR valve in the EGR enabled position a portion of exhaust gas emitted from an engine is directed through an EGR cooler for recirculation into the engine, and with the EGR valve in the EGR disabled position the exhaust gas is not recirculated through the engine. An EGR coolant temperature is predicted based on measured engine speed, vehicle speed, outside ambient temperature, and commanded fuel level of the vehicle. The EGR valve is actuated to the EGR disabled position when the predicted EGR coolant temperature is equal or greater than an EGR coolant temperature threshold. The EGR coolant temperature is predicted without direct measurement of engine coolant temperature.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of operating an exhaust gas recirculation (EGR) system of a vehicle, the method comprising: measuring an engine speed, a vehicle speed, an outside ambient temperature, and a commanded fuel level of the vehicle; controlling an EGR valve, wherein the EGR valve is actuable between an EGR enabled position and an EGR disabled position; wherein with the EGR valve in the EGR enabled position a portion of exhaust gas emitted from an engine of the…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02D41/0065Primary
Mechanical Engineering · mapped topic
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- What does patent US9309823B2 cover?
- A system and method of operating an exhaust gas recirculation (EGR) system of a vehicle includes controlling an EGR valve actuable between an EGR enabled position and an EGR disabled position, such that with the EGR valve in the EGR enabled position a portion of exhaust gas emitted from an engine is directed through an EGR cooler for recirculation into the engine, and with the EGR valve in the …
- Who is the assignee on this patent?
- Gm Global Tech Operations Inc
- What technology area does this patent fall under?
- Primary CPC classification F02D41/0065. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 12 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).