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US 6,142,114 AGranted
Intake structure of an internal combustion engine
AssigneeSuzuki Motor Corporation
InventorYuji Yoshikawa
Life of this patent
Estimating the term…
Abstract
An improved intake structure of an internal combustion engine intended to attain a reduction of weight and improve engine performance. A mounting flange and a surge tank are integrally formed as a manifold constituent, and branch pipes are formed separately from the manifold constituent.
Claims17
An intake structure for a vehicle internal combustion engine provided with plural cylinders, said intake structure comprising:
- an elongate mounting flange adapted for securement to a side of the engine, said flange having at least four substantially parallel cylinder access openings extending therethrough in spaced relationship along an elongated direction thereof;
- a hollow surge tank positioned in adjacent but sidwardly spaced relation from said mounting flange, said surge tank being positioned centrally of said flange in said elongated direction and having outwardly facing opposite end walls each having first and second openings extending therethrough along directions which are substantially parallel with said elongated direction, said surge tank having a length parallel with said elongated direction which is substantially less than the length of said mounting flange;
- said cylinder access openings extending in parallel directions which are substantially perpendicular to the directions of the openings in said end walls of said surge tank;
- a support brace extending sidwardly between and rigidly connected to said surge tank and a central portion of said mounting flange;
- said mounting flange, said surge tank and said support brace being an integral one-piece monolithic manifold component having a generally T-shaped configuration;
- first and second branch pipes having respective one ends thereof connected to adjacent first and second said cylinder access openings disposed adjacent one end of said mounting flange and respective other ends thereof connected to said first and second openings in one said end wall of said surge tank which is closest to said first and second cylinder access openings;
- third and fourth branch pipes having respective one ends thereof connected to adjacent third and fourth said cylinder access openings disposed adjacent the other end of said mounting flange and respective other ends thereof connected to said first and second openings in said other end wall of said surge tank;
- and
- said first and second branch pipes being separable from said manifold component, and said third and fourth pipes also being separable from said manifold component and said first and second branch pipes.
6 more elements
An intake structure for a vehicle internal combustion engine provided with an intake manifold, said intake structure comprising:
- a hollow surge tank positioned in sidewardly spaced relation to an elongate mounting flange, said surge tank having outwardly facing opposite end walls each having openings extending therethrough;
- said elongate mounting flange adapted for securement to the engine, said mounting flange having at least four substantially parallel cylinder access openings extending therethrough in spaced relationship along the elongated direction thereof, said cylinder access openings being substantially perpendicular to openings in the end walls of said surge tank;
- a support brace extending sidewardly between and rigidly connected to said surge tank and said mounting flange;
- said mounting flange, said surge tank and said support brace being an integral one-piece monolithic manifold component;
- and
- branch pipes each having one end thereof connected to a respective one of said cylinder access openings and the other end thereof connected to a respective one of said openings of said surge tank, said branch pipes being separable from said manifold component.
3 more elements
An intake structure for an internal combustion engine, comprising:
- an elongate mounting flange adapted for securement to the internal combustion engine, said mounting flange having at least four substantially parallel cylinder access openings extending therethrough in spaced relationship along an elongated direction thereof;
- a hollow surge tank positioned in adjacent but sidewardly spaced relation from said mounting flange and defining therein a plurality of pipe openings, said surge tank being positioned centrally of said flange in said elongated direction;
- said mounting flange and said surge tank being fixedly joined as an integral one-piece monolithic manifold component having a T-shaped configuration;
- and
- a plurality of branch pipes each having one end thereof connected to a respective one of said cylinder access openings and the other end thereof connected to a respective one of the pipe openings in said surge tank.
2 more elements
Dependencies are inferred from the claim text.