Exhaust-gas supply device of a turbine wheel of an exhaust-gas turbocharger

Abstract

The invention relates to an exhaust-gas supply device (1) of a turbine wheel (2) of an exhaust-gas turbocharger (3), having a two-channel turbine housing (4), which has a first channel (5) and which has a second channel (6), and an exhaust manifold (7) which can be connected to an internal combustion engine (8), which exhaust manifold (7) has a first manifold channel (9) which connects first cylinders (Z1, Z4) of the internal combustion engine (8) so as to form a first manifold exhaust-gas path length, and which exhaust manifold (7) has a second manifold channel (10) which connects second cylinders (Z2, Z3) so as to form a second manifold exhaust-gas path length, with it being possible by combining the manifold channels with the spiral channels of the turbine housing to generate virtually identical overall exhaust-gas path lengths of the two channels. The invention also relates to an exhaust-gas turbocharger (3) having an exhaust-gas supply device (1) for a turbine wheel (2).

Description

technical field [0001] The invention relates to an exhaust gas supply arrangement for a turbine wheel of an exhaust-gas turbocharger according to the preamble of claim 1 . Background technique [0002] A supply device of the stated type is known from DE 10 2007 017 826 A1 in the form of a two-channel gas flow supply, which has a first inlet duct and at least a second inlet duct. [0003] In the firing sequence exhaust manifolds of so-called internal combustion engines, such as in particular spark ignition engines, the exhaust gases of cylinders which in each case are not directly consecutive in the firing sequence are combined. For example, in a four-cylinder engine, cylinders 1 and 4 and also cylinders 2 and 3 are combined with a 1-3-4-2 cylinder firing order. This firstly allows, especially in four-cylinder engines, to reduce the interaction of these cylinders during the charge exchange due to the lower residual gas content, which leads to an increase in the fresh gas cha...

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Problems solved by technology

[0004] However, if this generic supply device is combined with a firing sequence exhaust manifold of the described type, this leads to this charge exchange of the internal combustion engine as well as the exhaust pulsation at the turbine wheel in a time-sequenced efficiency However, this is due to uneven loading if the volume and length of the first channel or one inlet duct are significantly greater than the volume and length of the second channel or the other inlet duct

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