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System and method for preventing icing in positive crankcase ventilation systems

A control system, engine technology, applied in crankcase ventilation, engine control, engine components, etc., can solve problems such as damage to cylinder components, polluted oil, etc.

Inactive Publication Date: 2012-09-26
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Blow-by vapors can contaminate the oil which can cause damage to the cylinder and / or its components

Method used

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  • System and method for preventing icing in positive crankcase ventilation systems
  • System and method for preventing icing in positive crankcase ventilation systems
  • System and method for preventing icing in positive crankcase ventilation systems

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Embodiment Construction

[0038] The following description is merely illustrative in nature and is in no way intended to limit the invention, its application or uses. For purposes of clarity, the same reference numbers will be used in the drawings to refer to similar elements. As used herein, the phrase at least one of A, B, and C should be understood to mean a logical (A or B or C) using a non-exclusive logical or. It should be understood that various steps within a method may be executed in different order without altering the basic principles of the invention.

[0039] As used herein, the term "module" may refer to, be part of, or include: an application specific integrated circuit (ASIC); an electronic circuit; a combinational logic circuit; a field programmable gate array (FPGA); A processor (shared, dedicated, or group) executing the code; another suitable component providing the described functionality; or a combination of some or all of the above, such as in a system-on-a-chip. The wording "m...

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PUM

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Abstract

A control system for an engine includes an icing condition detection module and an icing prevention module. The icing condition detection module detects an icing condition of a positive crankcase ventilation (PCV) system of the engine when an ambient temperature is less than a predetermined temperature for a first predetermined period. The icing prevention module increases engine speed for a second predetermined period when the icing condition is detected.

Description

technical field [0001] The present invention relates to internal combustion engines, and more particularly to systems and methods for preventing icing in positive crankcase ventilation (PCV) systems. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors (to the extent described in the Background section) and aspects of this description that are not otherwise considered prior art at the time of filing are neither expressly nor implicitly admitted to be relevant to the present invention conflicting prior art. [0003] The internal combustion engine draws air into the intake manifold through an air intake system, which can be regulated by a throttle valve. Air in the intake manifold is distributed to multiple cylinders and combines with fuel to form an air / fuel (A / F) mixture. The A / F mixture is combusted within the cylinders to drive pistons ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M13/00F02D29/02
CPCF02D31/001F02D2250/08F02D2200/0414F02D41/021
Inventor T.A.斯皮克斯G.K.泰彭
Owner GM GLOBAL TECH OPERATIONS LLC