Air cleaner

Patent metadata

Field	Value
Publication number	US-11840302-B2
Application number	US-202217852950-A
Country	US
Kind code	B2
Filing date	Jun 29, 2022
Priority date	Jul 27, 2021
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

There is provided an air cleaner configured to be disposed behind an engine and inside a vehicle body frame. The air cleaner includes: an air cleaner case in which an intake chamber is formed; an air filter that divides the intake chamber into a dirty side and a clean side; an inlet tube configured to take in air from a vehicle rear side to the dirty side; and an outlet tube configured to send air from the clean side to the engine. The inlet tube and the outlet tube are attached to an upper side of the air cleaner case, and an expansion portion is formed on a lower side of the air cleaner case, the expansion portion being formed by expanding the clean side further downward than the dirty side.

First claim

What is claimed is:

1. An air cleaner configured to be disposed behind an engine and inside a vehicle body frame, the air cleaner comprising:
an air cleaner case in which an intake chamber is formed;
an air filter that divides the intake chamber into a dirty side and a dean side;
an inlet tube configured to take in air from a vehicle rear side to the dirty side; and
an outlet tube configured to send air from the clean side to the engine, wherein
the inlet tube and the outlet tube are attached to an upper side of the air cleaner case, and an expansion portion is formed on a lower side of the air cleaner case, the expansion portion being formed by expanding the clean side further downward than the dirty side, and
the expansion portion expands the clean side to the vehicle rear side with respect to the dirty side.

2. The air cleaner according to claim 1 , wherein
a downstream end of the inlet tube and an upstream end of the outlet tube are located at substantially the same height.

3. The air cleaner according to claim 1 , wherein
an upstream end of the outlet tube is directed toward the expansion portion.

4. The air cleaner according to claim 1 , wherein
an upper portion of the air filter is inclined so as to be in front of a lower portion of the air filter in a side view,
a downstream end of the inlet tube faces a center of a front surface of the air filter in the side view, and
an upstream end of the outlet tube faces an upper portion of a back surface of the air filter in the side view.

5. The air cleaner according to claim 1 , wherein
the engine is a two-cylinder engine, and the outlet tubes are a pair of outlet tubes having different lengths,
the pair of outlet tubes is formed with umbrella portions that extend toward upstream ends, and
the upstream ends of the pair of outlet tubes are directed toward a center of the air filter.

6. The air cleaner according to claim 1 , wherein
the inlet tube extends from the air cleaner case to the vehicle rear side, and
the expansion portion extends below the inlet tube to the vehicle rear side.

7. The air cleaner according to claim 1 , wherein
the vehicle body frame includes a seat rail that supports a seat from below, and
the air filter is located above a lower end of the seat rail, and the expansion portion extends below the seat rail to the vehicle rear side with respect to the air filter.

Assignees

• Suzuki Motor Corp

Inventors

• Fukui Akihito
• Yagi Shintaro

Classifications

• B62J40/00 Primary

  Arrangements of air cleaners specially adapted for cycles · CPC title

• F02M35/0201

  Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof · CPC title

• F02M35/02475

  characterised by the shape of the filter element · CPC title

• F02M35/044

  Special arrangements of cleaners in or with respect to the air intake system, e.g. in the intake plenum, in ducts or with respect to carburettors · CPC title

• F02M35/048 Primary

  Arranging or mounting on or with respect to engines or vehicle bodies · CPC title