Fuel Injection Control Device
US-2018156147-A1 · Jun 7, 2018 · US
Control device
US10408156B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10408156-B2 |
| Application number | US-201615775883-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 29, 2016 |
| Priority date | Dec 8, 2015 |
| Publication date | Sep 10, 2019 |
| Grant date | Sep 10, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A control device that is to output a driving signal to a fuel injector includes a full-lifting valve-closing response acquisition unit to acquire a full-lifting valve-closing profile indicating a valve-closing behavior of the fuel injector from a full-lifting state of a valve body constituting the fuel injector, based on a behavior of an electric signal from the full-lifting state to a closing state of the valve body, and a valve-opening response estimation unit to estimate a valve-opening profile indicating a valve-opening behavior when a valve-opening driving signal is input to the fuel injector, based on at least the full-lifting valve-closing profile.
First claim
Opening claim text (preview).
The invention claimed is: 1. A control device to output a driving signal to a fuel injector, comprising: a full-lifting valve-closing response acquisition unit to acquire a full-lifting valve-closing profile indicating a valve-closing behavior of the fuel injector from a full-lifting state of a valve body constituting the fuel injector, based on a behavior of an electric signal from the full-lifting state to a closing state of the valve body; and a valve-opening response estimation unit to estimate a valve-opening profile indicating a valve-opening behavior when a valve-opening driving signal is input to the fuel injector, based on at least the full-lifting valve-closing profile. 2. The control device according to claim 1 , wherein the electric signal indicates a driving-voltage behavior of the fuel injector. 3. The control device according to claim 1 , wherein the full-lifting valve-closing profile includes at least one of a valve-closing start timing of the valve body, a valve-closing end timing of the valve body or a valve-closing responsivity of the valve body. 4. The control device according to claim 1 , wherein the valve-opening profile includes at least one of a valve-opening start timing of the valve body, a valve-opening end timing of the valve body or a valve-opening responsivity of the valve body. 5. The control device according to claim 1 , wherein the full-lifting valve-closing response acquisition unit is to acquire the full-lifting valve-closing profile by obtaining a change of an induced electromotive force caused by a change of a velocity of the valve body from the full-lifting state to the closing state, as a voltage behavior. 6. The control device according to claim 1 , wherein the valve-opening response estimation unit is to estimate the valve-opening profile based on the full-lifting valve-closing profile and based on at least one of a component of the fuel injector or information indicating an environment condition. 7. The control device according to claim 1 , further comprising: a partial-lifting valve-closing response acquisition unit to acquire a partial-lifting valve-closing profile indicating a valve-closing behavior of the fuel injector from a partial-lifting state of the valve body, based on the behavior of the electric signal from the partial-lifting state to the closing state of the valve body; and a partial injection quantity estimation unit to estimate a partial-lifting fuel injection quantity in a partial lifting of the fuel injector, based on the valve-opening profile and the partial-lifting valve-closing profile. 8. The control device according to claim 7 , wherein the partial-lifting valve-closing response acquisition unit is to acquire the partial-lifting valve-closing profile by obtaining a change of an induced electromotive force caused by a change of a velocity of the valve body from the partial-lifting state to the closing state of the valve body, as a voltage behavior. 9. The control device according to claim 7 , further comprising: a correction control unit to correct the fuel injection quantity injected by the fuel injector based on the partial-lifting fuel injection quantity and to output the driving signal corresponding to the fuel injection quantity that is corrected.
Assignees
Inventors
Classifications
Injectors peculiar thereto {with means directly operating the valve needle} · CPC title
Fuel-injection apparatus characterised by being operated electrically · CPC title
using information of the actual current value · CPC title
with means for determining actual opening or closing time · CPC title
with means for controlling injection timing or duration · CPC title
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- What does patent US10408156B2 cover?
- A control device that is to output a driving signal to a fuel injector includes a full-lifting valve-closing response acquisition unit to acquire a full-lifting valve-closing profile indicating a valve-closing behavior of the fuel injector from a full-lifting state of a valve body constituting the fuel injector, based on a behavior of an electric signal from the full-lifting state to a closing …
- Who is the assignee on this patent?
- Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification F02D41/2467. 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).