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Apparatus and method for diagnosing failure of piston cooling jet of engine

A piston cooling nozzle and engine technology, applied in the direction of engine cooling, engine measuring device, engine lubrication, etc., can solve the problems of oil flow, increased emissions, deterioration of engine thermal efficiency, etc., and achieve the effect of preventing damage and reducing costs

Inactive Publication Date: 2016-12-21
HYUNDAI MOTOR CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0011] First, when the solenoid valve is stuck open due to malfunction, the oil flows continuously to the PCJ, so that oil flow occurs and causes increased emissions due to deterioration of engine thermal efficiency
[0012] Second, when the solenoid valve is stuck closed due to a fault, the oil can no longer flow to the PCJ and the cylinder block is damaged due to the increased temperature of the engine

Method used

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  • Apparatus and method for diagnosing failure of piston cooling jet of engine
  • Apparatus and method for diagnosing failure of piston cooling jet of engine
  • Apparatus and method for diagnosing failure of piston cooling jet of engine

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Embodiment Construction

[0036] Reference will now be made in detail hereinafter to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention has been described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0037] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Figure 4 It is a schematic diagram showing a fault diagnosis device for a piston cooling nozzle of an engine according to the present invention.

[0039] From Figure 4 As can be seen in the ...

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Abstract

An apparatus and a method for diagnosing failure of a piston cooling jet of an engine are disclosed. The apparatus for diagnosing failure of the piston cooling jet of the engine includes an oil line for a piston cooling jet arranged in a cylinder block in a longitudinal direction, a piston cooling jet mounted at the oil line for the piston cooling jet to inject oil to a piston, a solenoid valve mounted at an inlet of the oil line for the piston cooling jet to selectively allow an injection operation of the piston cooling jet, an oil pressure detecting means mounted at the oil line for the piston cooling jet after the solenoid valve to detect oil pressure, and a control unit configured to receive a detection signal of the oil pressure detecting means and determine whether the solenoid valve is in a failure state.

Description

technical field [0001] The present invention relates to an apparatus and method for diagnosing a malfunction of a piston cooling nozzle of an engine, and more particularly, to an apparatus and method for diagnosing a malfunction of a piston cooling nozzle of an engine that can determine a malfunction of a solenoid valve to selectively operate the piston cooling jets. Background technique [0002] A main oil gallery formed in a cylinder block of an engine for a vehicle serves as a passage for lubricating oil from the cylinder block to a crankshaft and various perturbation units. [0003] In addition to the main oil gallery, in order to prevent the piston ring from increasing the thermal fatigue stress of the piston due to combustion, and to prevent the cylinder block from being damaged, a piston coolant nozzle (PCJ) can be installed in the cylinder block. [0004] refer to figure 1 and figure 2 , the main oil gallery 12 is longitudinally arranged on one side of the cylind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P11/18
CPCF01P11/18F01P2025/04F01P2050/22F01P3/08F01M1/08F01M1/16F01M2250/00F01P11/14F01P2003/006
Inventor 金承范
Owner HYUNDAI MOTOR CO LTD
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