Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Control device and control method for internal combustion engine

a control device and control method technology, applied in the direction of electric control, engine revolution, machines/engines, etc., can solve problems such as lack of attention, and achieve the effect of more effective suppression of deposit generation

Inactive Publication Date: 2018-09-27
TOYOTA JIDOSHA KK
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent provides a device and method to control an internal combustion engine that prevents the formation of deposits and cools the piston effectively regardless of the condition of the oil used. By monitoring the degree of deterioration of the oil and adjusting the supply rate of oil to the engine, deposits are reduced and the piston is cooled effectively.

Problems solved by technology

However, the technique disclosed in JP 2014-080888 A pays no attention to controlling the oil jet in view of the fact that the deposit generation temperature falls as the oil deterioration degree increases.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control device and control method for internal combustion engine
  • Control device and control method for internal combustion engine
  • Control device and control method for internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0023]A first embodiment of the disclosure will be described first with reference toFIGS. 1 to 4.

[0024]1. Configuration of Internal Combustion Engine According to First Embodiment

[0025]FIG. 1 is a sectional view for showing a configuration of an internal combustion engine 10 that is provided with an oil jet 28 according to the first embodiment of the disclosure. The internal combustion engine 10 is provided with a cylinder block 12 and a cylinder head 14. A plurality of cylinders 16 is formed in the cylinder block 12. One of the cylinders 16 is illustrated in FIG. 1. A piston 18 is disposed in each of the cylinders 16. The piston 18 is configured to reciprocate in the cylinder 16.

[0026]1-1. Lubrication System for Internal Combustion Engine

[0027]An oil pan 20 for keeping oil lubricating each portion of the internal combustion engine 10 is attached to the lower end portion of the cylinder block 12. The oil in the oil pan 20 is pumped up by an oil pump 24 via an oil strainer 22. After ...

second embodiment

[0062]A second embodiment of the disclosure will be described with reference to FIGS. 5 and 6. In the following description, the configuration that is illustrated in FIG. 1 is used as an example of the system configuration of the second embodiment.

[0063]1. Oil Jet Control According to Second Embodiment

[0064]The oil jet control according to the second embodiment differs from the oil jet control according to the first embodiment in that the temperature of the oil is added to the engine operation state parameters used along with the oil deterioration degree for the determination of the supply flow rate Q of the oil.

[0065]1-1. Example of Processing by ECU

[0066]FIG. 5 is a flowchart illustrating the routine of processing relating to the oil jet control according to the second embodiment. The processing of Steps S100, S104, and S108 in the routine illustrated in FIG. 5 is as described above in the first embodiment.

[0067]In the routine illustrated in FIG. 5, the ECU 40 acquires the engine ...

third embodiment

[0074]A third embodiment of the disclosure will be described with reference to FIGS. 7 and 8. In the following description, the configuration that omits the oil deterioration sensor 48 from the configuration illustrated in FIG. 1 is used as an example of the system configuration of the third embodiment. This also applies to a fourth embodiment (described later).

[0075]1. Oil Jet Control According to Third Embodiment

[0076]The oil jet control according to the third embodiment differs from the oil jet control according to the first embodiment merely in terms of the oil deterioration degree determination method. Specifically, in the third embodiment, the oil deterioration degree is determined based on engine operation time instead of the use of the oil deterioration sensor 48.

[0077]1-1. Example of Processing by ECU

[0078]FIG. 7 is a flowchart illustrating the routine of processing relating to the oil jet control according to the third embodiment. The processing of Steps S100, S102, and S1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A control device for an internal combustion engine including a piston, an oil jet configured to inject oil toward the piston, and an actuator configured to adjust a supply flow rate of the oil to the oil jet. The control device includes an electronic control unit configured to control the actuator such that the supply flow rate under the same engine load and the same engine rotation speed increases as a degree of deterioration of the oil increases.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Japanese Patent Application No. 2017-056391 filed on Mar. 22, 2017, which is incorporated herein by reference in its entirety including the specification, drawings and abstract.BACKGROUND1. Technical Field[0002]The disclosure relates to a control device and a control method for an internal combustion engine and, more particularly, to a control device and a control method for an internal combustion engine provided with an oil jet configured to inject oil toward a piston.2. Description of Related Art[0003]An oil jet device for an internal combustion engine provided with an oil jet configured to inject oil toward a piston is disclosed in, for example, Japanese Unexamined Patent Application Publication No. 2014-080888 (JP 2014-080888 A). Specifically, in the oil jet device, oil jet control is executed as follows when the engine is driven (when the engine is rotated by a wheel). In other words, in a situatio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): F01M1/16F01M1/08F01P3/08
CPCF01M1/16F01M1/08F01P3/08F01M2001/083F01P2025/40F01M2250/64F01M2250/60F02D41/30F02D2200/023
Inventor IMOTO, MASAYUKIKOYAMA, TAKASHI
Owner TOYOTA JIDOSHA KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com