| US 7,610,748 B2 | ||
| Mounting structure for an air-fuel ratio sensor in a motorcycle, and exhaust subassembly including same | ||
| Tomoya Kono, Saitama (Japan); Takeru Abe, Saitama (Japan); Ryutaro Yamazaki, Saitama (Japan); and Mamoru Uraki, Saitama (Japan) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Sep. 27, 2005, as Appl. No. 11/236,683. | ||
| Claims priority of application No. 2004-286063 (JP), filed on Sep. 30, 2004. | ||
| Prior Publication US 2006/0064964 A1, Mar. 30, 2006 | ||
| Int. Cl. F01N 3/00 (2006.01) | ||
| U.S. Cl. 60—276 [60/274; 60/313; 60/323] | 16 Claims |
| 1. In a motorcycle of the type having a multi-cylinder engine and an exhaust system comprising a separate exhaust pipe extending
from each respective cylinder of the engine, the improvement comprising
improved mounting structure in said exhaust system for supportively receiving an air-fuel ratio sensor used for linearly detecting
a concentration of oxygen in an exhaust gas of the motorcycle during operation thereof,
the air-fuel ratio sensor comprising an element whose output voltage changes in proportion to the oxygen concentration in
an exhaust stream,
wherein the exhaust pipes are joined together at a hourglass-shaped convergent connector having a minimum width portion, wherein
said fuel-air ratio sensor is mounted substantially centrally on the convergent connector,
wherein said convergent connector comprises a connector body having an inclined surface, and wherein the air-fuel ratio sensor
is mounted on the inclined surface of said convergent connector so as to be inclined towards a rear of said motorcycle,
wherein said air-fuel ratio sensor is mounted on the inclined surface so as to be inclined towards a center of the motorcycle
in a width direction of the motorcycle; and
wherein said exhaust system is placed on of a left side and a right side of the motorcycle.
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