Methods and systems for fuel injection control
US-10066570-B2 · Sep 4, 2018 · US
Internal combustion engine control device
US10890132B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10890132-B2 |
| Application number | US-201816497162-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2018 |
| Priority date | Mar 27, 2017 |
| Publication date | Jan 12, 2021 |
| Grant date | Jan 12, 2021 |
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- Title
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Abstract
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An internal combustion engine control device ( 1 ) includes an injector-temperature calculation unit ( 21 a ), an engine-temperature calculation unit ( 21 b ), an operating-state control unit ( 21 c ), and an integration-time calculation unit ( 21 d ). The engine-temperature calculation unit ( 21 b ) calculates an engine temperature by using an injector temperature and a fuel-injection integration time.
First claim
Opening claim text (preview).
The invention claimed is: 1. An internal combustion engine control device applied to an internal combustion engine, the internal combustion engine control device comprising: an injector-temperature calculation unit that calculates an injector temperature based on a coil resistance value of an injector; an internal-combustion-engine temperature calculation unit that calculates a temperature of the internal combustion engine based on the injector temperature; and an operating-state control unit that controls an operating state of the internal combustion engine based on the temperature of the internal combustion engine, wherein the internal combustion engine control device further comprises an integration-time calculation unit that calculates a driving time of the injector and calculates a fuel-injection integration time obtained by integrating the driving time in a predetermined period, and the internal-combustion-engine temperature calculation unit calculates an injector cooling amount based on the fuel-injection integration time, and calculates the temperature of the internal combustion engine based on a corrected injector temperature calculated by correcting the injector temperature with the injector cooling amount, or calculates the temperature of the internal combustion engine by correcting a base temperature of the internal combustion engine, calculated on the basis of the injector temperature, with the injector cooling amount. 2. The internal combustion engine control device according to claim 1 , wherein the internal-combustion-engine temperature calculation unit calculates the injector cooling-amount target value based on a value obtained by dividing the fuel-injection integration time by the predetermined period. 3. The internal combustion engine control device according to claim 1 , wherein the internal-combustion-engine temperature calculation unit calculates an injector cooling-amount target value having a correlation with the fuel-injection integration time in the predetermined period, and when the internal-combustion-engine temperature calculation unit calculates the injector cooling amount, the internal-combustion-engine temperature calculation unit gradually shifts the injector cooling amount toward the injector cooling-amount target value.
Assignees
Inventors
Classifications
Estimation of engine temperature · CPC title
- F02D41/20Primary
Output circuits, e.g. for controlling currents in command coils · CPC title
the control being related to the coil temperature · CPC title
Controlling fuel injection {(F02D41/182, F02D41/24 take precedence)} · CPC title
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- What does patent US10890132B2 cover?
- An internal combustion engine control device ( 1 ) includes an injector-temperature calculation unit ( 21 a ), an engine-temperature calculation unit ( 21 b ), an operating-state control unit ( 21 c ), and an integration-time calculation unit ( 21 d ). The engine-temperature calculation unit ( 21 b ) calculates an engine temperature by using an injector temperature and a fuel-injectio…
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02D41/20. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 12 2021 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).