摘要 |
The invention relates to an exhaust system (10) for an internal combustion engine (20) comprising a number of cylinders (1, 2, 3, 4) with a preferably one-piece exhaust pipe assembly with at least one first exhaust pipe (11, 12, 13, 14) per cylinder (1, 2, 3, 4). Two first exhaust pipes (11, 14; 12, 13) of both cylinders (1, 2, 3, 4), which do not immediately follow one another in the firing order, lead into a second exhaust pipe (15, 16), and two second exhaust pipes (15, 16) lead into a common manifold (17). The invention provides that, in the opening area (21, 22, 23) of both first and/or second exhaust pipes (11, 14; 12, 13; 15, 16), the uniting first and second exhaust pipes (11, 14; 12, 13; 15, 16) span an angle (a<SUB>1</SUB>, a<SUB>2</SUB>) = 30°, preferably = 20°, said angle (a<SUB>1</SUB>, a<SUB>2</SUB>) being spanned by the tangents (t<SUB>1</SUB>, t<SUB>2</SUB>, t<SUB>3</SUB>, t<SUB>4</SUB>) at reference points (P<SUB>1</SUB>, P<SUB>2</SUB>, P<SUB>3</SUB>, P<SUB>4</SUB>) of the inner wall (11a, 14a; 12a, 13a; 15a, 16a) of the exhaust pipes (11, 14; 12, 13; 15, 16). These reference points (P<SUB>1</SUB>, P<SUB>2</SUB>, P<SUB>3</SUB>, P<SUB>4</SUB>) are defined by an amount (a<SUB>1</SUB>, a<SUB>2</SUB>), which is approximately half the diameter (d<SUB>1</SUB>, d<SUB>2</SUB>) of the first and second exhaust pipe (11, 14; 12, 13; 15, 16), upstream from a first points of intersection (S<SUB>1</SUB>, S<SUB>2</SUB>) of both tangents (t<SUB>1</SUB>, t<SUB>2</SUB>, t<SUB>3</SUB>, t<SUB>4</SUB>). |
申请人 |
AVL LIST GMBH;KAPUS, PAUL;GLANZ, REINHARD;POESCHL, ROBERT;GROEGER, MICHAEL;BREINESBERGER, BURKHART |
发明人 |
KAPUS, PAUL;GLANZ, REINHARD;POESCHL, ROBERT;GROEGER, MICHAEL;BREINESBERGER, BURKHART |