Acoustic and thermal cover assembly

摘要

An internal combustion engine having an engine body and an acoustic and thermal cover assembly are provided. The engine body includes an exhaust gas recirculation (EGR) pipe extending therefrom and the acoustic and thermal cover assembly is positioned adjacent to the engine body. The acoustic and thermal cover assembly includes a first section and a second section extending along the engine body. The assembly further includes an acoustic and thermal shield extending along the first section, a plastic shell extending along the second section, the acoustic and thermal shield and plastic shell forming a cover, and an insulating layer positioned between the cover and the engine body.

主权项

1. An internal combustion engine comprising:
an engine body having an exhaust gas recirculation (EGR) pipe extending therefrom; an acoustic and thermal cover assembly positioned adjacent to the engine body, the acoustic and thermal cover assembly having a first section and a second section extending from one end of the first section, the first section and second section extending along the engine body, the assembly comprising:
an acoustic and thermal shield extending along the first section adjacent the EGR pipe;a plastic shell extending along the second section, the acoustic and thermal shield and plastic shell forming a cover, the plastic shell being distal from the EGR pipe; and an insulating layer positioned between the cover and the engine body, the insulating layer extending across the first section and the second section; and wherein the acoustic and thermal shield is made from three layers disposed in a laminar arrangement with the insulating layer, the outer layers being made from aluminized steel and the inner layer being made from ceramic fiber.