Crash-tolerant system arrangement in a motor-vehicle engine compartment

Abstract

The invention relates to a crash-tolerant system arrangement in an engine compartment which is arranged in the front end region of a motor vehicle, comprising an internal combustion engine which is arranged in the engine compartment with an engine block (1), an exhaust-gas manifold (2) which receives exhaust gases of the internal combustion engine, an exhaust-gas turbocharger (3) which is assigned to the internal combustion engine with an exhaust-gas inlet (5) and an exhaust-gas outlet (6), and an exhaust-gas purification system (7) with a substantially cylindrical first catalytic-converter housing (9) which is arranged in front of the exhaust-gas turbocharger (3) in the driving direction (8) and in which a first exhaust-gas catalytic-converter element is arranged. Here, a first exhaust-gas guide element (10) is provided for guiding the exhaust gas from the exhaust-gas outlet (6) of the exhaust-gas turbocharger (3) to the first catalytic-converter housing (9), which first exhaust-gas guide element (10) extends from the exhaust-gas outlet (6) of the exhaust-gas turbocharger (3) to an inlet cone (11) of the first catalytic-converter housing (9) and can transmit a pressure force, which acts on the first catalytic-converter housing (9) substantially counter to the driving direction (8), at least partially to the exhaust-gas turbocharger (3). The exhaust-gas turbocharger (3) is connected mechanically by way of a first fastening device (12) to the exhaust-gas manifold (2) and by way of a second fastening device (13) to the engine block (1), wherein the first and the second fastening device (12, 13) are designed in such a way that a release of the connection of the exhaust-gas turbocharger (3) to the exhaust-gas manifold (2) and / or a release of the connection of the exhaust-gas turbocharger (3) to the engine block (1) take / takes place within a predefined upper value range for the pressure force.

Description

technical field [0001] The invention relates to a crash-resistant system arrangement in an engine compartment arranged in the front area of ​​a motor vehicle. Background technique [0002] In order to increase occupant protection, especially in the event of a frontal collision, it is known to provide the front vehicle region with structures that absorb energy and are sufficiently deformable under the action of forces. For example, DE 10 2009 016 941 A1 discloses a crash-resistant system arrangement in an engine compartment arranged in the front area of ​​a motor vehicle, which has an energy absorbing element which is assigned to the exhaust gas system of the motor vehicle. The requirement to provide a system that is as compact as possible makes it difficult to use crash-resistant energy-absorbing elements that, despite their high complexity, can be accommodated in the engine compartment with a small space requirement, since these energy-absorbing elements are mostly Provide...

AI Technical Summary

Problems solved by technology

The requirement to provide a system that is as compact as possible makes it difficult to use crash-resistant energy-absorbing elements that, despite their high complexity, can be accommodated in the engine compartment with a small space requirement, since these energy-absorbing elements are mostly Provides energy-dissipating deformation paths, which increase the construction space requirement

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