Exhaust manifold device for engines

• US 4,475,341 A
• Filed: 05/19/1982
• Issued: 10/09/1984
• Est. Priority Date: 05/19/1981
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Inoue, Kazuo, Kato, Kentaro
• Primary Examiner(s): Hart, Douglas
• Application Number:
  US06/379,751
• Time in Patent Office: 874 Days
• Field of Search: 60/322, 60/323, 60/605, 60/280, 138/148, 138/149
• US Class Current: 60/605.1
• CPC Class Codes: F01N 13/10 of exhaust manifolds with cooling jacket F01N3/046
• CPC Class Codes: F01N 13/1811 with means permitting relative movement, e.g. compensation of thermal expansion or vibration
• CPC Class Codes: F02B 37/02 Gas passages between engine outlet and pump drive, e.g. reservoirs
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

An exhaust manifold device for an engine including at least one pair of cylinders arranged substantially in the form of a V and a turbosupercharger driven with exhaust gases of the cylinders to supply compressed air thereto. The exhaust manifold device comprises a pair of exhaust gas inlet members for receiving the exhaust gases, the inlet members being connected integrally with either of the cylinders, a pair of communication members for conducting the exhaust gases, the communication members having the longitudinal lengths thereof variable and either ends thereof connected with either of the inlet members, and an exhaust gas collecting member for collecting the exhaust gases to supply same to the turbosupercharger, the collecting member being connected with the respective other ends of the communication members.

In hot temperature operation, the thermal expansion of the exhaust manifold device can be effectively absorbed, thus eliminating undue stresses.

Claims

1. In an engine including at least one pair of cylinders arranged substantially in the form of a V and a turbosupercharger driven with exhaust gases of said cylinders to supply compressed air thereto,

an exhaust manifold device, comprising:

a pair of exhaust gas inlet members for receiving said exhaust gases;

said inlet members being connected integrally with either of said cylinders;

a pair of communication members for conducting said exhaust gases;

said communication members having the longitudinal lengths thereof variable and either ends thereof connected with either of said inlet members;

an exhaust gas collecting member for collecting said exhaust gases to supply same to said turbosupercharger; and

said collecting member being connected with the respective other ends of said communication members;

each of said communication members comprising an outer tube secured at either end thereof to said collecting member and either of said inlet members and formed at least partially along the longitudinal direction thereof with a bellows and an inner tube provided through said outer tube, said inner tube having one end thereof secured to either of said inlet members and said collecting member and the other end thereof axially movable relative to said outer tube;

said communication member further comprising first and second support tubes secured respectively to said inlet member and said collecting member;

said outer tube being fixedly fitted on said first and second support tubes; and

said inner tube being fixedly fitted at the outer circumferential portion near said one end thereof and slidably fitted at another circumferential portion near said other end thereof in said first and second support tubes.

2. An exhaust manifold device according to claim 1, wherein:

said inlet member and said collecting member have stepped inner diameter portions with relatively large diameters, respectively; and

said inner tube is freely fitted at both said ends thereof in either of said inner diameter portions.

3. An exhaust manifold device according to claim 1, wherein:

at least either of said first and second support tubes is reduced in a stepped manner to have a relatively large diameter portion and a relatively small diameter portion;

said outer tube is fitted at one end thereof fixedly on said large diameter portion; and

said outer circumferential portion near said one end of said inner tube is fitted fixedly in said small diameter portion.

4. An exhaust manifold device according to claim 3, wherein:

the other of said support tubes has the form of a substantially straight tube.