Exhaust gas sampling device for outboard motor
First Claim
1. An exhaust gas sampling device/or an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, cover means detachably mounted on said case means, an exhaust passage for introducing an exhaust gas from said engine to a lower portion of said case means, and an exhaust gas sampling pipe having opposite opened ends and connected at one of said opposite ends to said exhaust passage, whereinthe other of said opposite opened ends of said exhaust gas sampling pipe is disposed within a space which is defined inside said case means and said cover means and which is separated from said exhaust passage, said other opened end of the exhaust gas sampling means being normally closed by a plug means removable while said exhaust gas is being sampled.
1 Assignment
0 Petitions
Accused Products
Abstract
An exhaust pipe extending from an engine of an outboard motor is covered with an exhaust pipe cover that defines a cooling water passage around an outer periphery of the pipe. An exhaust gas sampling pipe has a base end inserted into the exhaust pipe through the exhaust pipe cover, and a tip end occluded by a detachable plug. The exhaust gas sampling pipe and the plug are accommodated within an engine cover detachably mounted on an upper portion of an undercase, whereby it is protected against rusting due to the deposition of seawater and damaging due to collision against another object.
-
Citations
24 Claims
-
1. An exhaust gas sampling device/or an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, cover means detachably mounted on said case means, an exhaust passage for introducing an exhaust gas from said engine to a lower portion of said case means, and an exhaust gas sampling pipe having opposite opened ends and connected at one of said opposite ends to said exhaust passage, wherein
the other of said opposite opened ends of said exhaust gas sampling pipe is disposed within a space which is defined inside said case means and said cover means and which is separated from said exhaust passage, said other opened end of the exhaust gas sampling means being normally closed by a plug means removable while said exhaust gas is being sampled.
-
11. An exhaust gas sampling device for an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, cover means detachably mounted on said case means, an exhaust passage for introducing an exhaust gas from said engine to a lower portion of said case means, and an exhaust gas sampling pipe having opposite opened ends and connected at one of said opposite ends to said exhaust passage, wherein
the other of said opposite opened ends of said exhaust gas sampling pipe is disposed within a space which is defined inside said case means and said cover means and which is separated from said exhaust passage, said other opened end of the exhaust gas sampling means being normally closed by a removable plug means, wherein said cover means is an undercover connected to a lower portion of an undercase covering the engine.
-
16. An exhaust gas sampling device for an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, an exhaust gas outlet passage which connects an exhaust bore in said engine with an exhaust chamber provided in said case means to introduce an exhaust gas from the engine to a lower portion of said case means, and an exhaust gas sampling pipe which is mounted in an outer wall member defining said exhaust gas outlet passage therein and which is connected at one of opposite opened ends thereof to said exhaust gas outlet passage, wherein
said exhaust gas sampling pipe is a stud pipe embedded into said outer wall member, and said outer wall member is formed with a sealing surface against which a removable plug for normally closing the other of said opposite opened ends of said exhaust sampling pipe abuts, said other opened end of the exhaust gas sampling pipe and said removable plug being disposed in a space which is defined inside at least one of said case means and said cover means which is separated from said exhaust gas outlet passage.
-
18. An exhaust gas sampling device for an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, an exhaust gas outlet passage which connects an exhaust bore in said engine with an exhaust chamber provided in said case means to introduce an exhaust gas from the engine to a lower portion of said case means, and an exhaust gas sampling pipe which is mounted in an outer wall member defining said exhaust gas outlet passage therein and which is connected at one of opposite opened ends thereof to said exhaust gas outlet passage, wherein
said exhaust gas sampling pipe is a stud pipe embedded into said outer wall member, and said outer wall member is formed with a sealing surface against which a removable plug for normally closing the other of said opposite opened ends of said exhaust sampling pipe abuts, said other opened end of the exhaust gas sampling pipe and said removable plug being disposed in a space which is defined inside said case means and which is separated from said exhaust gas outlet passage, wherein said exhaust gas sampling pipe is formed with an abutment for receiving a jig for threadedly fitting said exhaust gas sampling pipe into said outer wall member.
-
19. An exhaust gas sampling device for an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, cover means detachably mounted to said case means and forming with said case means an internal space, an exhaust passage through which an exhaust gas is passed from said engine to a lower portion of said case means, and an exhaust gas sampling pipe connected at one of opposite opened ends thereof to the exhaust gas passage, wherein
said exhaust gas sampling pipe is formed substantially straight and is mounted from above to a seat surface formed in an upwardly-directed manner on an outer surface of a thick wall defining said exhaust gas passage, and said exhaust gas sampling device further include a removable plug located in an internal passage defined in said cover means and/or said case means for normally closing the other of said opposite opened ends of said exhaust gas sampling pipe, said internal space being separated from said exhaust gas passage.
-
21. An exhaust gas sampling device for an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, cover means detachably mounted on said cover case means, an exhaust passage for introducing an exhaust gas from said engine to a lower portion of said case means, and an exhaust gas sampling pipe connected to said exhaust passage, wherein
an opened end of said exhaust gas sampling pipe is located within a space which is defined by said case means and said cover means and said cover means is an undercover connected to a lower portion of an undercase covering the engine.
-
24. An exhaust gas sampling device for an outboard motor comprising an engine, a propeller driven by said engine, case means for rotatably supporting said propeller, cover means detachably mounted on said case means, an exhaust passage for introducing an exhaust gas from said engine to a lower portion of said case means, and an exhaust gas sampling pipe connected to said exhaust passage, wherein
an opened end of said exhaust gas sampling pipe for receiving said exhaust gas from said exhaust passage is disposed in said exhaust passage and an opposite closable end of said exhaust sampling pipe is disposed in a space between said exhaust passage and said cover means.
Specification