Direct fuel injection combustion engine and more particularly a compression-ignition engine with a low compression ratio
US-2016341106-A1 · Nov 24, 2016 · US
Two solenoid valve relay two-stage fuel injection valve for diesel engines
US8973554B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8973554-B2 |
| Application number | US-201013642276-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 26, 2010 |
| Priority date | Apr 21, 2010 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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- Title
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Abstract
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The present invention provides a two solenoid valve relay with a two-phase fuel injection valve for a diesel engine, which is installed on a valve itself to enable injection at pressure greater than opening pressure, at which the fuel enters into a fuel valve, thereby improving fuel injection performance, and which is configured to enable adjustment of an injection timing at the opening pressure within the valve, wherein injection timings through a solenoid valve is provided for low load and high load, respectively, such that a distinct difference exists between the injection timings to open the nozzle hole of the nozzle in a differential manner at pressure higher than the pressure, at which the fuel enters to the fuel valve and internal spring opening pressure, thereby injecting fuel at high pressure even at low load to facilitate vaporization, and wherein, in case of a high speed operation or high load, low pressure/high pressure needle valves are opened at the same time to quickly inject fuel of a high volume through a plurality of nozzle holes, thereby improving combustion performance of an engine, and wherein a space between the needle valve and the nozzle hole which are closed after the injection is minimized because the nozzle hole is opened differentially and sequentially according to pressure, thereby avoiding waste of fuel and reducing harmful gas (smoke, Nox).
First claim
Opening claim text (preview).
What is claimed is: 1. A two-phase fuel injection valve for injecting fuel into a cylinder for a diesel engine, comprising: a distinguishing means distinguishing a pressure of fuel entering to a fuel valve into two phases of a low load and a high load, wherein the low load requires lower engine power and the high load requires higher engine power; a nozzle including a low pressure nozzle hole which is opened at the low load and a high pressure nozzle hole which is opened at the…
Assignees
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Classifications
- F02M45/086Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02M45/10Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8973554B2 cover?
- The present invention provides a two solenoid valve relay with a two-phase fuel injection valve for a diesel engine, which is installed on a valve itself to enable injection at pressure greater than opening pressure, at which the fuel enters into a fuel valve, thereby improving fuel injection performance, and which is configured to enable adjustment of an injection timing at the opening pressur…
- Who is the assignee on this patent?
- Park Deuk-Jin, Kim Eung-Sung, Kim Ju-Tae, and 7 more
- What technology area does this patent fall under?
- Primary CPC classification F02M45/086. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 10 2015 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).