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Floating Crankcase Ventilation System and Method

A crankcase ventilation, crankcase technology, applied in crankcase ventilation, engine components, machines/engines, etc., can solve problems such as cooling unit fouling

Active Publication Date: 2017-10-03
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the cooling unit downstream of the supercharger or turbocharger can become fouled

Method used

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  • Floating Crankcase Ventilation System and Method
  • Floating Crankcase Ventilation System and Method
  • Floating Crankcase Ventilation System and Method

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Embodiment Construction

[0015] The present invention relates to a crankcase ventilation (CV) system and method for an internal combustion engine. CV systems include devices that are modular and repeatable on a single engine to selectively adjust the CV capacity of the engine based on engine structural configuration, power rating, and the like. The CV system according to the present invention can be mounted to various parts of the engine that are in fluid communication with the interior cavity of the engine's crankcase so that effective removal of CV gases can be effectively removed from the engine during operation. In the embodiments shown here, the structure advantageously integrates a high blow-by flow CV, an oil separation module or "breather" into the structural valve cover and / or directly onto the crankcase of the engine. Where applicable, a CV or oil separator supports a downstream high efficiency oil mist separator. Assuming a bonnet integrated oil separation module is associated with the uni...

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Abstract

The invention discloses a floating crankcase ventilation system and method. According to the invention, an internal combustion engine includes a crankcase having first and second pluralities of openings. A oil separation module has at least one inlet housing that communicates with a oil separation filter and is connectable to at least one opening from the first plurality of openings or from the second plurality of openings to define a crankcase vent.

Description

technical field [0001] The present invention relates generally to a crankcase ventilation system, and more particularly to a filtered crankcase ventilation system for an internal combustion engine. Background technique [0002] A typical internal combustion engine operates by introducing fuel and air into cylinders for combustion. Pistons move within cylinders to compress a fuel and air mixture for combustion. Burning fuel expands the volume of air in the cylinder to generate power. Sliding seals between each piston and the corresponding bore in which the piston operates help seal the compressed fuel and air mixture and seal fuel products in the cylinder as volume expands and pressure increases in the cylinder. However, exhaust products may leak past the piston seals and into the interior volume of the crankcase. Exhaust products can also enter the internal engine cavity through intake or exhaust valve seals, turbocharger cooling oil flow, and possibly other sources. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M13/04
CPCF01M13/04F01M2013/0061F01M2013/0488F01M2013/0438F01M2013/0472F01M11/0004F01M2013/0433
Inventor R·A·劳伦斯B·A·斯塔克E·弗格森
Owner CATERPILLAR INC