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Method for operating an internal combustion engine with a split cooling system and closed cylinders

A technology of internal combustion engines and cylinders, applied in the field of internal combustion engines, can solve disadvantages and other problems

Active Publication Date: 2020-12-25
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can occur, for example, when individual cylinders are switched off for long periods, and can prove to be disadvantageous when subsequently starting the cylinders which are thus cold

Method used

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  • Method for operating an internal combustion engine with a split cooling system and closed cylinders
  • Method for operating an internal combustion engine with a split cooling system and closed cylinders
  • Method for operating an internal combustion engine with a split cooling system and closed cylinders

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Embodiment Construction

[0028] The following description relates to systems and methods for a cooling circuit having cooling jackets corresponding to cylinder heads and engine blocks. The cooling jacket of the cylinder head is fluidly sealed from the cooling jacket of the engine block. The cooling jacket of the cylinder head further includes one or more regions corresponding to the cylinders of the engine. In one example, the number of zones may be equal to the number of cylinders. A coolant circuit fluidly coupled to the cylinder head cooling jacket and the engine block cooling jacket is shown in figure 1 and 2 middle. A top-down view of the coolant system is shown at image 3middle. Coolant may flow to regions of the cylinder head corresponding to active cylinders, while flow of coolant to regions of the cylinder head corresponding to deactivated cylinders may be blocked during certain conditions. The method used to flow coolant through the jacket and coolant loop is shown in image 3 middl...

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PUM

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Abstract

The invention relates to a method for operating an internal combustion engine with a split-flow cooling system and closed cylinders. The present invention provides methods and systems for coolant systems. In one example, a method includes flowing coolant to an active cylinder during a cold start.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to German Patent Application No. 102015201238.7 filed on January 26, 2015, the entire content of which is hereby incorporated by reference for all purposes. technical field [0003] The invention relates to a method for operating an internal combustion engine comprising a split-flow cooling system and at least one deactivatable cylinder. Background technique [0004] Optimal fuel efficiency is achieved when the internal combustion engine reaches an optimal operating temperature range. This essentially has to do with the friction of moving parts, which is higher during cold starts, especially at low ambient temperatures. Furthermore, the viscosity of the cold machine oil increases, which likewise only decreases with increasing temperature. Furthermore, the exhaust emission figure of the internal combustion engine also increases during the cold start phase, which can be attributed to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P3/02F01P3/20F02F1/40F01P7/16F02D17/02
CPCF01P3/02F01P3/20F01P7/16F02D17/02F02F1/40F01P2003/024F01P2003/027F01P7/165F02D41/0087
Inventor F·J·布林克曼V·斯米利亚诺夫斯基J·克默林H·G·奎科斯V·豪普茨H·M·金德尔W·维莱姆斯
Owner FORD GLOBAL TECH LLC