Unlock instant, AI-driven research and patent intelligence for your innovation.

Engine thermostat having bypass pressure-dampening fluid passage

Inactive Publication Date: 2008-09-18
INT ENGINE INTPROP CO LLC
View PDF5 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These instabilities often cause the plates to vibrate or “slam” against their valve seats, thus causing damage thereto.

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
  • Engine thermostat having bypass pressure-dampening fluid passage
  • Engine thermostat having bypass pressure-dampening fluid passage
  • Engine thermostat having bypass pressure-dampening fluid passage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011]The following describes an apparatus for and method of reducing an effect of instability in cooling fluid flow through a thermostat, especially during a transitional phase of operation, by providing an improved bypass fluid flow passage that has pressure dampening characteristics.

[0012]A section view of a known thermostat 100 as installed in an internal combustion engine between a first component 102 and a second component 104 thereof is shown in FIG. 1. The thermostat 100 includes a thermal actuator assembly 106. The thermal actuator assembly 106 includes an arm 108 that is capable of extending when heated. The arm 108 passes through a cap 110 that is sealably and permanently attached to a container 112. The container 112 contains a “wax pill”114 that melts and expands under conditions of increased temperature. A thermostat plate 115 is non-slidingly engaged with the actuator assembly 106 on an inner portion thereof, and has a seal 116 over-molded on an outer portion thereof....

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 thermostat assembly (200) includes an actuator portion (106) having a sealed container (126) with an arm (108) protruding therefrom. A retainer plate (118) connects the thermostat assembly (200) to an engine component (104). A bypass valve plate (228) is arranged to sealably engage a bypass valve seat (134) that is formed in another component (102). The bypass valve plate (228) includes a body portion (402) having a central opening (408) and an outer periphery, an inner rim (406) surrounds the central opening (408), an outer rim (404) surrounds the outer periphery, and a plurality of openings (230) are formed in the body portion (402). The plurality of openings (230) is adjacent to an interface between the body portion (402) and the outer rim (404), such that a bypass pressure-dampening fluid passage is defined through the plurality of openings (230) in the bypass valve plate (228).

Description

FIELD OF THE INVENTION[0001]This invention relates to internal combustion engines, including but not limited to control of an engine cooling system flow with a thermostat device.BACKGROUND OF THE INVENTION[0002]Internal combustion engines have cooling systems associated therewith that transfer heat away from the engine structure. These cooling systems typically include thermally actuated devices, or thermostats, that can route a cooling fluid flow either into the engine or into a radiator depending on a temperature of the cooling flow.[0003]Typical engine thermostats are 3-way valves having one inlet and two outlets. A first port thereof acts as an inlet for the cooling fluid flow. A second port thereof acting as a first outlet, when open, directs the cooling fluid flow directly into the engine when the cooling flow is at a low temperature. A third port thereof acting as a second outlet, when open, allows the cooling fluid flow to bypass the engine and pass through a radiator, where...

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
IPC IPC(8): F01P7/14
CPCG05D23/022F01P7/16
Inventor BANTA, GEORGE L.ESTACIO, EDGARDO Y.BUZINOV, ANDREY Y.DORSCH, CHRISTOPHER B.
Owner INT ENGINE INTPROP CO LLC