Device for geraeuschdaempfung in the intake - a system of a with an engine brake and an extremely long connecting pipe between the air - suction point and suction line diesel internal combustion engine, which is provided for the drive of motor vehicles

摘要

960,674. Regulating. DAIMLER BENZ A.G. Sept. 10, 1962 [Sept. 14, 1961], No. 34543/62. Heading F1B. In a diesel engine with an engine exhaust brake in the exhaust passage 5, noises occurring in the air filter 9 during engine braking are reduced by means including an air-throttle flap 10 provided in the intake passage 8 and actuated by means in the same opening and closing direction as the braking flap 6. Braking flap 6 is actuated by linkage 7 and operates throttle flap 10 through linkage 11, 12, 13, 13a, 14 and 15. Arm 13a moves more than is necessary to close flap 10 and a spring element 16 takes up the excess movement in link 14. In modifications flap 10 may have one or more small holes to provide an air passage when closed or may close incompletely against an adjustable stop 20. A spring 17 tends to maintain air flap 10 in the open position. The air throttle may be arranged in pipe 2 upstream of an oil-bath air filter 9.