Outboard motor

Patent metadata

Field	Value
Publication number	US-2020200075-A1
Application number	US-201916579233-A
Country	US
Kind code	A1
Filing date	Sep 23, 2019
Priority date	Dec 20, 2018
Publication date	Jun 25, 2020
Grant date	—

Abstract

An intake manifold is connected to a cylinder of an engine, and extends backward from the cylinder. A throttle body is attached to the intake manifold. As seen in a plan view of an outboard motor, the throttle body is disposed backward of a head cover, while being disposed inward of a lateral end of the intake manifold in a right-and-left direction of the outboard motor.

First claim

What is claimed is:

1 . An outboard motor comprising:
an engine including a crankcase, a crankshaft at least in part disposed inside the crankcase, a cylinder disposed behind the crankcase, and a head cover disposed behind the cylinder; a driveshaft connected to the crankshaft, the driveshaft extending in an up-and-down direction of the outboard motor; a propeller shaft connected to the driveshaft, the propeller shaft extending in a back-and-forth direction of the outboard motor; an intake manifold connected to the cylinder, the intake manifold extending backward from the cylinder; and a throttle body attached to the intake manifold, the throttle body being disposed backward of the head cover as seen in a plan view of the outboard motor, the throttle body being disposed inward of a lateral end of the intake manifold in a right-and-left direction of the outboard motor.

2 . The outboard motor according to claim 1 , wherein
the throttle body is disposed above the intake manifold, and the throttle body at least in part overlaps with the intake manifold as seen in the plan view of the outboard motor.

3 . The outboard motor according to claim 1 , wherein
the intake manifold includes
a plurality of intake pipes extending backward from the cylinder the intake pipes being disposed in alignment in the up-and-down direction of the outboard motor, and
a pipe merge collector connected to the intake pipes, the pipe merge collector extending in the up-and-down direction of the outboard motor, and the throttle body is attached to the pipe merge collector.

4 . The outboard motor according to claim 1 , further comprising:
a component disposed laterally to the cylinder and forward of the intake manifold as seen in the plan view of the outboard motor.

5 . The outboard motor according to claim 1 , wherein
the cylinder includes
a left cylinder including a cylinder axis extending backward and leftward, and
a right cylinder including a cylinder axis extending backward and rightward,
the head cover includes
a left head cover attached to the left cylinder, and
a right head cover attached to the right cylinder,
the intake manifold includes
a left intake manifold attached to the left cylinder, and
a right intake manifold attached to the right cylinder, and
the throttle body is disposed backward of the left head cover and the right head cover as seen in the plan view of the outboard motor, and, the throttle body is disposed between a left lateral end of the left intake manifold and a right lateral end of the tight intake manifold in the right-and-left direction of the outboard motor.

6 . The outboard motor according to claim 5 , wherein
the throttle body is disposed between an extension of the cylinder axis of the left cylinder and an extension of the cylinder axis of the right cylinder as seen in the plan view of the outboard motor.

7 . The outboard motor according to claim 5 , wherein
the left intake manifold is connected to a left lateral surface of the left cylinder, the left intake manifold extending backward through a left side of the left cylinder, and the right intake manifold is connected to a right lateral surface of the right cylinder, the right intake manifold extending backward through a right side of the right cylinder.

Assignees

• Yamaha Motor Co Ltd

Inventors

• Maekawa Shinya
• Morino Makoto
• Nakayama Koichi

Classifications

• F02B61/045 Primary

  for marine engines · CPC title

• F02B75/22

  with cylinders in V, fan, or star arrangement · CPC title

• F02M35/167 Primary

  having outboard engines; Jet-skis · CPC title

• B63H20/32

  Housings {(air intakes for outboard engines F02M35/167)} · CPC title

• F02B75/007

  having vertical crankshafts · CPC title