System and method for starting a diesel engine
US-2019032581-A1 · Jan 31, 2019 · US
System and method for starting a diesel engine
US10408142B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10408142-B2 |
| Application number | US-201916378278-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 8, 2019 |
| Priority date | Jul 31, 2017 |
| Publication date | Sep 10, 2019 |
| Grant date | Sep 10, 2019 |
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- Title
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- Abstract
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
Methods and systems for starting and stopping a diesel engine are presented. In one example, a cetane enhancer is selectively mixed with diesel fuel to provide a cetane enhanced diesel fuel. A diesel engine may be supplied the cetane enhanced diesel fuel after an engine cold start to improve catalyst light off time and engine emissions.
First claim
Opening claim text (preview).
The invention claimed is: 1. An engine method, comprising: mixing a cetane enhancing fluid with diesel fuel having a first cetane number to provide diesel fuel having a second cetane number; pumping the diesel fuel having the second cetane number to a high pressure fuel pump via a low pressure fuel pump; and injecting the diesel fuel having the second cetane number to an engine in response to starting the engine when a catalyst temperature is less than a threshold. 2. The method of claim 1 , where the cetane enhancing fluid is comprised from one of alkyl nitrates, peroxides, tetraazoles, and thioaldehydes. 3. The method of claim 1 , where mixing a cetane enhancing fluid with diesel fuel having a first cetane number includes pumping the cetane enhancing fluid from a cetane enhancer tank and pumping the diesel fuel having the first cetane number from a diesel fuel tank. 4. The method of claim 3 , where the mixing the cetane enhancing fluid includes mixing the cetane enhancing fluid and the diesel fuel having a first cetane number via a venturi. 5. The method of claim 4 , where the mixing the cetane enhancing fluid includes opening a valve between a venturi and the cetane enhancer tank. 6. The method of claim 1 , where the low pressure fuel pump is electrically driven. 7. The method of claim 1 , where the high pressure fuel pump is mechanically driven via the engine.
Assignees
Inventors
Classifications
Control of electrical fuel pumps · CPC title
for injecting directly into the cylinder · CPC title
with post injections · CPC title
mechanically driven · CPC title
- F02D41/0025Primary
Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures · CPC title
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- What does patent US10408142B2 cover?
- Methods and systems for starting and stopping a diesel engine are presented. In one example, a cetane enhancer is selectively mixed with diesel fuel to provide a cetane enhanced diesel fuel. A diesel engine may be supplied the cetane enhanced diesel fuel after an engine cold start to improve catalyst light off time and engine emissions.
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02D41/0025. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Sep 10 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).