Rotary piston internal combustion engine especially of trochoidal construction

Claim 2

A rotary piston internal combustion engine with an exhaust system including outlet channel means starting from an expansion space of the engine and exhaust pipe means for the exhaust gases adjoining said outlet channel means and of double-walled construction at least over a part of its length to form an annular space provided with a feed for air or fuel-air mixture, the interior space of the exhaust pipe means being provided with guide means for producing a turbulence, said guide means including first guide plate means provided in said exhaust pipe means near the end thereof adjacent the outlet channel means having web portions subtending an angle and so arranged that the exhaust gases from the outlet channel means impinge thereagainst at least in part and further guide plate means arranged downstream of said first guide plate means, said further plate means including second guide plate means having two web portions disposed at an angle to one another and third guide plate means disposed near the downstream end of said exhaust pipe means at least approximately parallel to one of the two web portions of said second guide plate means, said third guide plate means including portions arranged downstream of the most downstream end of said second guide plate means, said guide plate means being arranged for effectively producing a double deflection of the gas stream flowing through said exhaust pipe means.

Claim 3

A rotary piston internal combustion engine according to claim 1, characterized in that the angle formed by the web portions of the second guide plate means is an obtuse angle.

Claim 4

A rotary piston internal combustion engine according to claim 1, characterized in that said third guide plate means is attached to an end flange on the exhaust pipe means disposed downstream of said outlet channel means.

Claim 5

A rotary piston internal combustion engine according to claim 3 characterized in that said end flange is perpendicular to the direction of flow from said outlet channel means and in that said end flange closes off a major portion of the cross-section of said exhaust pipe means.

Claim 6

A rotary piston internal combustion engine according to claim 4, characterized in that said third guide plate means is a flat plate extending from said end flange upstream to a position approximately in line with the most downstream end of said second guide plate means.

Claim 7

A rotary piston internal combustion engine according to claim 1, characterized in that both the first guide plate means and the second guide plate means have their major angular displacement between their respective web portions on the side facing the outlet channel means.

Claim 8

A rotary piston internal combustion engine according to claim 1, characterized in that said second guide plate means has one web portion attached directly at a side wall of the exhaust pipe means whereby gases can pass over said second plate means only at one side thereof.

Claim 9

A rotary piston internal combustion engine according to claim 7, characterized in that the web portion of said second guide plate means which is not fixed to the side wall extends parallel to an opposite side wall of said exhaust pipe means.

Claim 10

A rotary piston internal combustion engine according to claim 1, characterized in that the two web portions are constructed as flat plates, one web portion being attached directly at a side wall of the exhaust pipe means.

Claim 11

A rotary piston internal combustion engine according to claim 8, characterized in that said web portion which is parallel to the side wall is shorter than said other web portion.

Claim 12

A rotary piston internal combustion engine with an exhaust system including outlet channel means starting from an expansion space of the engine and exhaust pipe means for the exhaust gases adjoining said outlet channel means and of double-walled construction at least over a part of its length to form an annular space provided with a feed for air or fuel-air mixture, the interior space the exhaust gases from the outlet channel means impinge thereagainst at least in part and further guide plate means arranged downstream of said first guide plate means, said further guide plate means including second guide plate means having two web portions disposed at an angle to one another and third guide plate means disposed near the downstream end of said exhaust pipe means at least approximately parallel to one of the two web portions of said second guide plate means, said guide plate means being arranged for effectively producing a double deflection of the gas stream flowing through said exhaust pipe means, on web portion of the second guide plate means extending approximately parallel to and nearer an inner wall of the exhaust pipe means and the other web portion thereof extending across the exhaust pipe means toward the opposite side thereof, the angle formed by the web portions of the first guide plate means being an acute angle, the angle formed by the web portions of the second guide plate means being an obtuse angle, the third guide plate means being a substantially flat plate extending substantially in the axial direction of the exhaust pipe means.

Claim 13

A rotary piston internal combustion engine with an exhaust system including outlet channel means starting from an expansion space of the engine and exhaust pipe means for the exhaust gases adjoining said outlet channel means and of double-walled construction at least over a part of its length to form an annular space provided with a feed for air or fuel-air mixture, the interior space the exhaust gases from the outlet channel means impinge thereagainst at least in part and further guide plate means arranged downstream of said first guide plate means, said further guide plate means including second guide plate means having two web portions disposed at an angle to one another and third guide plate means disposed near the downstream end of said exhaust pipe means at least approximately parallel to one of the two web portions of said second guide plate means, said guide plate means being arranged for effectively producing a double deflection of the gas stream flowing through said exhaust pipe means, on web portion of the second guide plate means extending approximately parallel to and nearer an inner wall of the exhaust pipe means and the other web portion thereof extending across the exhaust pipe means toward the opposite side thereof, the angle formed by the web portions of the first guide plate means being an acute angle, the angle formed by the web portions of the second guide plate means being an obtuse angle, the third guide plate means being a substantially flat plate extending substantially in the axial direction of the exhaust pipe means.

Claim 14

A rotary piston internal combustion engine according to claim 11, characterized in that the diameter of the substantially cylindrical inner wall of the exhaust pipe means is larger than the diameter of the outlet channel means and in that the transition from outlet channel means to the interior space of the exhaust pipe means is constructed conically.

Claim 15

A rotary piston internal combustion engine according to claim 11, characterized in that the angle formed by the web portions of the first guide plate means is an acute angle.

Claim 16

A rotary piston internal combustion engine according to claim 13, characterized in that the angle formed by the web portions of the second guide plate means is an obtuse angle.

Claim 17

A rotary piston internal combustion engine according to claim 11, characterized in that the annular space is provided with feed means for air or fuel-air mixture near the end thereof opposite the outlet channel means and is in communication with the exhaust system by way of at least one line means.

Claim 18

A rotary piston internal combustion engine according to claim 11, characterized in that said exhaust pipe means is of double-wall construction substantially over its entire length.

Claim 19

A rotary piston internal combustion engine according to claim 11, characterized in that the engine is of trochoidal construction.

Claim 20

A rotary piston internal combustion engine with an exhaust system including outlet channel means starting from an expansion space of the engine and exhaust pipe means for the exhaust gases adjoining said outlet channel means and of double-walled construction at least over a part of its length to form an annular space provided with a feed for air or fuel-air mixture, the interior space of the exhaust pipe means being provided with guide means for producing a turbulence, said guide means including first guide plate means provided in said exhaust pipe means near the end thereof adjacent the outlet channel means having web portions subtending an angle and so arranged that the exhaust gases from the outlet channel means impinge thereagainst at least in part and further guide plate means arranged downstream of said first guide plate means, said further guide plate means including second guide plate means having two web portions disposed at an angle to one another and third guide plate means disposed near the downstream end of said exhaust pipe means at least approximately parallel to one of the two web portions of said second guide plate means, said guide plate means being arranged for effectively producing a double deflection of the gas stream flowing through said exhaust pipe means, one web portion of the second guide plate means extending approximately parallel to and nearer an inner wall of the exhaust pipe means and the other web portion thereof extending across the exhaust pipe means toward the opposite side thereof, the angle formed by the web portions of the first guide plate means being an acute angle, the angle formed by the web portions of the second guide plate means being an obtuse angle, the third guide plate means being a substantially flat plate extending substantially in the axial direction of the exhaust pipe means.

Claim 21

A rotary piston internal combustion engine with an exhaust system including outlet channel means starting from an expansion space of the engine and exhaust pipe means for the exhaust gases adjoining said outlet channel means and of double-walled construction at least over a part of its length to form an annular space provided with a feed for air or fuel-air mixture, the interior space of the exhaust pipe means being provided with guide means for producing a turbulence, said guide means including first guide plate means provided in said exhaust pipe means near the end thereof adjacent the outlet channel means having web portions subtending an angle and so arranged that the exhaust gases from the outlet channel means impinge thereagainst at least in part and further guide plate means arranged downstream of said first guide plate means, said further guide plate means including second guide plate means having two web portions disposed at an angle to one another and third guide plate means disposed near the downstream end of said exhaust pipe means at least approximately parallel to one of the two web portions of said second guide plate means, said guide plate means being arranged for effectively producing a double deflection of the gas stream flowing through said exhaust pipe means, one web portion of the second guide plate means extending approximately parallel to and nearer an inner wall of the exhaust pipe means and the other web portion thereof extending across the exhaust pipe means toward the opposite side thereof, the angle formed by the web portions of the first guide plate means being an acute angle, the angle formed by the web portions of the second guide plate means being an obtuse angle, the third guide plate means being a substantially flat plate extending substantially in the axial direction of the exhaust pipe means.

Claim 22

A rotary piston internal combustion engine according to claim 18, characterized in that the annular space is in communication with the exhaust system by way of several line means.

Claim 23

A rotary piston internal combustion engine according to claim 15, characterized in that the annular space is in communication with the outlet channel means by way of said line means.

Claim 24

A rotary piston internal combustion engine according to claim 15, characterized in that the annular space is in communication by way of said line means with the expansion space in proximity to the outlet channel means.

Claim 25

A rotary piston internal combustion engine according to claim 15, characterized in that the annular space is in communication with the interior space of the exhaust pipe means by way of said line means.

Claim 26

A rotary piston internal combustion engine with an exhaust system including outlet channel means starting from an expansion space of the engine and exhaust pipe means for the exhaust gases adjoining said outlet channel means and of double-walled construction at least over a part of its length to form an annular space provided with a feed for air or fuel-air mixture, the interior space of the exhaust pipe means being provided with guide means for producing a turbulence, said guide means including first guide plate means provided in said exhaust pipe means near the end thereof adjacent the outlet channel means having web portions subtending an angle and so arranged that the exhaust gases from the outlet channel means impinge thereagainst at least in part and further guide plate means arranged downstream of said first guide plate means, said further guide plate means including second guide plate means having two web portions disposed at an angle to one another and third guide plate means disposed near the downstream end of said exhaust pipe means at least approximately parallel to one of the two web portions of said second guide plate means, said guide plate means being arranged for effectively producing a double deflection of the gas stream flowing through said exhaust pipe means, the third guide plate means being a substantially flat plate extending substantially in the axial direction of the exhaust pipe means.

Claim 27

A rotary piston internal combustion engine with an exhaust system including outlet channel means starting from an expansion space of the engine and exhaust pipe means for the exhaust gases adjoining said outlet channel means and of double-walled construction at least over a part of its length to form an annular space provided with a feed for air or fuel-air mixture, the interior space of the exhaust pipe means being provided with guide means for producing a turbulence, said guide means including first guide plate means provided in said exhaust pipe means near the end thereof adjacent the outlet channel means having web portions subtending an angle and so arranged that the exhaust gases from the outlet channel means impinge thereagainst at least in part and further guide plate means arranged downstream of said first guide plate means, said further guide plate means including second guide plate means having two web portions disposed at an angle to one another and third guide plate means disposed near the downstream end of said exhaust pipe means at least approximately parallel to one of the two web portions of said second guide plate means, said guide plate means being arranged for effectively producing a double deflection of the gas stream flowing through said exhaust pipe means, the third guide plate means being a substantially flat plate extending substantially in the axial direction of the exhaust pipe means.

Claim 28

A rotary piston internal combustion engine according to claim 23, characterized in that the annular space is provided with feed means for air or fuel-air mixture near the end thereof opposite the outlet channel means and is in communication with the exhaust system by way of at least one line means.

Claim 29

A rotary piston internal combustion engine according to claim 24, characterized in that the engine is of trochoidal construction.