Engine analyzer apparatus
First Claim
1. An apparatus for use with an engine analyzer system employing a transducer responsive to the characteristic being analyzed, the combination of:
- an adapter means including means for releasable connection between the engine and the transducer and physically separating the transducer from the engine;
said adapter having a first fluid passage means therethrough communicating the engine with the transducer and a second fluid passage means therethrough in heat exchange relationship with and separate from said first fluid passage means, said second fluid passage means having an inlet located near said transducer and an outlet located adjacent said means for releasable connection; and
means for supplying a fluid through said second fluid passage means from said inlet to said outlet for cooling the adapter and the gas in communication with the transducer to provide maximum cooling at the transducer to prevent damage to the transducer.
1 Assignment
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Accused Products
Abstract
An engine analyzer apparatus for use with large internal combustion engines in which a self-closing ball valve is permanently installed on each engine cylinder and an air-cooled adapter may be selectively connected to each valve for communicating the engine cylinder pressure to a transducer while protecting the transducer from overheating and without influencing the operation of the engine. The adapter is cooled principally by compressed air but controlled amounts of water may be injected for additional cooling. An unloading device may be mounted on the ball valve for selectively unloading an engine cylinder during testing.
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Citations
20 Claims
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1. An apparatus for use with an engine analyzer system employing a transducer responsive to the characteristic being analyzed, the combination of:
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an adapter means including means for releasable connection between the engine and the transducer and physically separating the transducer from the engine; said adapter having a first fluid passage means therethrough communicating the engine with the transducer and a second fluid passage means therethrough in heat exchange relationship with and separate from said first fluid passage means, said second fluid passage means having an inlet located near said transducer and an outlet located adjacent said means for releasable connection; and means for supplying a fluid through said second fluid passage means from said inlet to said outlet for cooling the adapter and the gas in communication with the transducer to provide maximum cooling at the transducer to prevent damage to the transducer. - View Dependent Claims (2, 3, 4)
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5. An apparatus for use with an engine analyzer system employing a transducer responsive to the characteristic being analyzed the combination of:
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an adapter means including means for releasable connection between the engine and the transducer and physically separating the transducer from the engine; said adapter having a first fluid passage means therethrough communicating the engine with the transducer and a second fluid passage means therethrough in heat exchange relationship with and separate from said first fluid passage means; and means for supplying a fluid to said second fluid passage means for cooling the adapter and the gas in communication with the transducer to prevent abnormal operation of the engine and damage to the transducer, said means for supplying fluid for cooling including an air compressor and a selectively operable water injection pump for providing a continuous supply of cooling air and selectively adding variable amounts of water to the air supply. - View Dependent Claims (6, 7)
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8. In an engine analyzer apparatus for use with a transducer responsive to the characteristic being analyzed, the combination of:
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a valve means for mounting on the engine; an adapter means including means for releasable connection to said valve means; said adapter having a first fluid passage means therethrough for communicating the said valve means with the transducer and a second fluid passage means therethrough in heat exchange relationship with and separate from said first fluid passage means, said second fluid passage means having an inlet located near said transducer and an outlet located adjacent said means for releasable connection to the engine; and means for supplying a fluid through said second fluid passage means from said inlet to said outlet for maximum cooling of said transducer by the incoming fluid while cooling the first fluid passage means and the gas therein to prevent abnormal operation of the engine and damage to the transducer. - View Dependent Claims (9, 10, 11)
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12. In an engine analyzer apparatus for use with a transducer responsive to the characteristic being analyzed, the combination of:
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a normally closed valve means for mounting on each cylinder of the engine; an adapter means including means for releasable connection to any one of said valve means; said adapter having a first fluid passage means therethrough for communicating the said valve means with the transducer and a second fluid passage means therethrough in heat exchange relationship with and separate from said first fluid passage means; means for supplying a fluid to said second fluid passage means for cooling the first fluid passage means and the gas therein to prevent abnormal operation of the engine and damage to the transducer; and an unloading means separate from said adapter for selective installation on any one of said valve means and which includes means for selectively opening the valve means to exhaust that engine cylinder to atmosphere.
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13. In an engine analyzer apparatus for use with a transducer responsive to the characteristic being analyzed, the combination of:
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a valve means for mounting on the engine; an adapter means including means for releasable connection to said valve means; said adapter having a first fluid passage means therethrough for communicating the said valve means with the transducer and a second fluid passage means therethrough in heat exchange relationship with and separate from said first fluid passage means; and means for supplying a fluid to said second fluid passage means including means for supplying compressed air and selectively supplying variable amounts of water with the compressed air for cooling the first fluid passage means and the gas therein to prevent abnormal operation of the engine and damage to the transducer.
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14. In an engine analyzer apparatus for use with a pressure transducer means, the combination of a valve means for mounting on the engine in communication with an engine cylinder including a valve body with a central tapered bore diverging toward the engine, a ball positioned in said bore for sealing engagement therewith by pressure from the engine, and means retaining the ball in the bore;
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an adapter means including means on one end for releasable connection to said valve means and a projecting pin means for unsealing said ball from said tapered bore upon said connection and means on the other end for mounting the transducer means; said adapter means having a first fluid passage therethrough in communication with said valve means on the one end and with the transducer means on the other end and a second fluid passage means therethrough in heat exchange relationship with and separate from said first fluid passage means; and means for supplying a fluid to said second fluid passage means for cooling the adapter and the gas communication from the engine to prevent abnormal operation of the engine and damage to the transducer means. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification