JP2001041076A5

JP2001041076A5 -

Info

Publication number: JP2001041076A5
Application number: JP1999217053A
Authority: JP
Filing date: 1999-07-30
Publication date: 2004-10-28

Description

【００１２】
さらに、上述した課題を解決するために、請求項３に記載したように、上記排気ガスセンサを側面視で上記フライホイールマグネト装置を覆うマグネトカバーの後方に配置し、さらに上記排気ガスセンサを上記車体がバンク時に形成するバンク角の延長線とほぼ平行に配置したものである。
そして、上述した課題を解決するために、請求項４に記載したように、並列に設けられた多気筒エンジンの一の気筒に接続されるエキゾーストパイプと、この一の気筒に隣接する気筒に接続されるエキゾーストパイプとを集合させた後、再び分割して車体後部に左右のマフラに接続される排気装置を備えた自動二輪車において、上記排気装置を上記多気筒エンジンの下部に設けられたオイルパンの下部側方を通るように配設すると共に、上記二つのエキゾーストパイプの、集合部の下流側近傍且つ上記オイルパンの下部から遠い側となる位置に排気センサを車体外側方に向けて設けたものである。 [0012]
Furthermore, in order to solve the problems described above, as described in claim 3, the exhaust gas sensor is disposed behind the magneto cover that covers the flywheel magneto device in a side view, and the exhaust gas sensor is the vehicle body It is disposed substantially parallel to the extension line of the bank angle formed at the time of bank.
Then, in order to solve the above-mentioned problems, as described in claim 4, an exhaust pipe connected to one cylinder of a multi-cylinder engine provided in parallel and a cylinder adjacent to the one cylinder are connected In the two-wheeled motor vehicle having an exhaust system which is divided again and connected to the left and right mufflers after being assembled together with the exhaust pipe, the exhaust system is provided with an oil pan provided at the lower portion of the multi-cylinder engine. The exhaust sensor is provided on the outside of the vehicle body at a position near the downstream side of the collecting portion and on the side far from the lower portion of the oil pan while passing through the lower side of the It is a thing.

Claims

An engine exhaust that combines four exhaust pipes extending from the front of the engine by two front collecting pipes and then combines these front collecting pipes into one by one rear collecting pipe. An exhaust gas sensor mounting structure for a motorcycle according to a first aspect of the present invention, the exhaust gas sensor 33 being attached to one of the left and right front collecting pipes 31R and 31L.

The engine 16 is provided with a crankshaft 25 extending in the vehicle width direction of the vehicle body 1, a flywheel magneto device 26 is provided at one end thereof, a clutch device 28 is provided at the other end, and a front assembly to which the exhaust gas sensor 33 is attached The pipe 31L is disposed on the opposite side of the clutch device 28 across the center of the vehicle body 1, and the exhaust gas sensor 33 is at a position not interfering with the planar shape of the oil pan 30 provided below the engine 16 in plan view. The exhaust gas sensor mounting structure for a motorcycle according to claim 1 disposed.

The exhaust gas sensor 33 is disposed behind the magneto cover 27 that covers the flywheel magneto device 26 in a side view, and the exhaust gas sensor 33 is disposed substantially parallel to the bank angle extension 34 formed by the vehicle body 1 at the time of banking. The exhaust gas sensor mounting structure for a motorcycle according to claim 2.

After the exhaust pipe connected to one cylinder of the multi-cylinder engine provided in parallel and the exhaust pipe connected to the cylinder adjacent to this one cylinder are assembled, they are divided again and left and right In the two-wheeled motor vehicle having an exhaust system connected to the muffler, the exhaust system 22 is disposed to pass through the lower side of the oil pan 30 provided at the lower side of the multi-cylinder engine 16, and An exhaust gas sensor attached to a motorcycle characterized in that the exhaust gas sensor 33 is directed outward of the vehicle body at a position near the downstream side of the collecting portion 31L and far from the lower portion of the oil pan of the pipes 23c and 23d. Construction.