|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F02M-025/07 F02B-047/08 F02B-047/00 F02B-033/34 F02B-033/00|
|미국특허분류(USC)||123/568.12; 123/568.2; 123/563|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 30 인용 특허 : 18|
In preferred embodiments, to, e.g., eliminate condensation build-up in the intake manifold and power cylinders, a charge-air cooler (CAC) and/or EGR cooler "bypass" system is provided that can, e.g., control the intake manifold temperature (IMT) above the dew-point temperature of the boosted air. Preferably, a two-port, single valve-body type valve is provided that proportionally controls the amount of charge-air that is "bypassed" (e.g., not cooled), while simultaneously diverting the charge-air cooler return, preferably, inversely proportionally.
What is claimed is: 1. A method of controlling an inlet manifold air temperature to inhibit condensation and the creation of corrosive acids or chemicals, comprising: a) providing a bypass valve that allows exhaust gas to bypass at least one cooler; b) operating said bypass valve to inhibit condensation buildup in an intake manifold or power cylinder; and c) maintaining an intake manifold temperature substantially within a predetermined range just above the dew point temperature, wherein said bypass valve comprises a first input port and a second input ...