| 摘要 |
The invention relates to an air-intake duct system (1) in which a throttle valve (40), an exhaust gas recirculating valve (29), a bypass valve (19), an exhaust gas cooler (11), against which exhaust gas flows via the bypass valve (19), and, optionally, an air mass sensor are integrated. A complete intake unit for modern engines is hereby created, with which both a charging optimization and thus a reduction in fuel consumption as well as a reduction in pollutants are achieved by a corresponding thermal management in the engine by the exhaust gas cooler (11) that, together with a shell (3, 4) of the housing (2), is manufactured as a single piece. The individual add- on pieces (12, 19, 29, 40, 59) are optimally matched to one another and have, due to their designs, a low weight and a low requirement of finishing work. This makes it possible to distinctly reduce assembly and manufacturing costs. |
