Measuring and testing – Test stand – For engine
Reexamination Certificate
2000-01-18
2001-10-09
Noori, Max (Department: 2855)
Measuring and testing
Test stand
For engine
Reexamination Certificate
active
06298716
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATIONS
None.
I. BACKGROUND OF INVENTION
1. Field of the Invention
This invention is a device for testing the compression of singular cylinders in an open internal combustion engine or an engine having the head disengaged from the engine block. The device is installed above the cylinder with the piston at its lowest point in the cycle and the piston is then rotated to its highest point in the cycle, increasing the pressure within the cylinder. If the pressure diminishes or does not hold to a constant, an indication of poor compression of that cylinder relative to the piston and ring is indicated by such pressure fluctuation or loss.
2. Description of Prior Art
Several patents identified in prior art address the testing of compression in internal combustion engines by monitoring of electrical control modules, starter motor current, alternator current, battery voltage waveform and other electro-voltaic means. In these cases, the engine must be in an operation state for these devices to conduct their testing.
The following cited U.S. Patents are herein disclosed and incorporated within this utility application by reference. U.S. Pat. No. 4,085,611 to Schwartz, discloses a recording compression testing device connected to the spark plug hole of an engine cylinder by means of a tube wherein the pulse of the engine cylinder is recorded on a continuous roll of paper by a pulse responsive piston connected to an internal recording cartridge. A device for testing leaks from defective piston assemblies in diesel engines is disclosed in U.S. Pat. No. 5,569,841 to Hoban. An electronic modular intake port control device for active monitor and control of an automobile engine is disclosed in U.S. Pat. No. 5,753,805 to Maloney. In U.S. Pat. No. 5,195,365 to Chujo, a combustion pressure sensor arranged within a cylinder head gasket.
II. SUMMARY OF THE INVENTION
The primary objective of this invention is to provide a device for testing the compression of the cylinders of an internal combustion engine while the engine is disassembled and the engine block exposed. The device addresses the issue of proper compression of the cylinder while accessing the components of the engine vital to the compression within the cylinders, namely the pistons, rings and the cylinder bore. The invention is composed of four primary components, including a hollow seal ring, two O-rings and a top seal plate incorporating an air gauge valve and an air check valve.
REFERENCES:
patent: 3975945 (1976-08-01), Hauk et al.
patent: 4085611 (1978-04-01), Schwartz
patent: 4782794 (1988-11-01), Hsu et al.
patent: 5195365 (1993-03-01), Chujo et al.
patent: 5569841 (1996-10-01), Hoban
patent: 5753805 (1998-05-01), Maloney
Homburg Randal D.
Noori Max
Stevens Maurice
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