Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Patent
1992-06-01
1993-04-20
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
123569, 123571, 123 9011, 123 9016, F02M 2507
Patent
active
052038300
ABSTRACT:
An annoying problem with diesel engines is combustion noise especially under high speed, low load conditions. The problem is caused by the relatively long ignition delay period or the period of time from the start of fuel injection into the combustion chamber until ignition occurs. The length of the ignition delay period influences the severity of the noise produced as it determines the amount of fuel that is ready to be burned. The length of the ignition delay period is strongly dependent on cylinder gas temperature during the initial part of the fuel injection schedule. The present invention provides an apparatus to reduce the ignition delay period by elevating the temperature of the air in a selected one of the combustion chambers so that at the start of the compression stroke the air is elevated reducing the ignition delay period.
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Bui Yung T.
Faletti James J.
Caterpillar Inc.
Cross E. Rollins
Macy M.
Rhoads Kenneth A.
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