Exhaust control device of engine

Patent · Sat Sep 13 04:00:00 EDT 1986

OSTI ID:5976849

Kitta, H

An exhaust system is described for an internal combustion engine having first and second exhaust ports, a first exhaust pipe extending from the first exhaust port, and a second exhaust pipe extending from the second exhaust port. A single valve body is formed with first and second exhaust passages spaced vertically one above the other, with means for communicating a horizontally extending portion of the first exhaust pipe with the first exhaust gas passage of the valve body and means for communicating a horizontally extending section of the second exhaust pipe with the second exhaust gas passage of the valve body. A valve shaft is journaled in the valve body for rotation about a horizontally extending axis, a second valve shaft is journaled in the valve body and rotatable about a horizontally extending axis, a first valve element is fixed to the first valve shaft within the first exhaust gas passage for controlling the flow therethrough, and a second valve element is fixed to the second valve shaft within the second exhaust gas passage for controlling the flow therethrough.

• Assignee: Yamaha Hatsudoki Kabushiki Kaisha, Iwata
• Patent Number(s): US 4817374
• OSTI ID: 5976849
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
DESIGN
DUCTS
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PIPES
VALVES