초록 ▼

An exhaust gas purifying system for an internal combustion engine including at least one combustion chamber connected to an intake port through an intake valve. The system comprises a first passage for passing a portion of exhaust gases discharged from the combustion chamber, a second passage for pa

An exhaust gas purifying system for an internal combustion engine including at least one combustion chamber connected to an intake port through an intake valve. The system comprises a first passage for passing a portion of exhaust gases discharged from the combustion chamber, a second passage for passing air, a fluid passage, at least one fluid injection nozzle having its one end connected to the fluid passage and the other end extending into the intake port toward the combustion chamber, the fluid injection nozzle adapted to open when the intake valve opens, and means responsive to engine operating condition for connecting the fluid passage to the first passage to permit injection of exhaust gases through the fluid injection nozzle into the combustion chamber during acceleration and for connecting the fluid passage to the second passage to permit injection of air through the fluid injection nozzle into the combustion chamber during normal operation or idling.

대표청구항 ▼

An exhaust gas purifying system for use in an internal combustion engine including at least one combustion chamber connected to an intake port through an intake valve, comprising: (a) a first passage for passing a portion of exhaust gases discharged from said combustion chamber; (b) a second passage

An exhaust gas purifying system for use in an internal combustion engine including at least one combustion chamber connected to an intake port through an intake valve, comprising: (a) a first passage for passing a portion of exhaust gases discharged from said combustion chamber; (b) a second passage for passing air; (c) a fluid passage; (d) at least one fluid injection nozzle having its one end connected to said fluid passage and the other end extending into said intake port toward said combustion chamber, said fluid injection nozzle adapted to open when said intake valve opens; and (e) means responsive to engine operating condition for connecting said fluid passage to said first passage to permit injection of exhaust gases through said fluid injection nozzle into said combustion chamber during acceleration and for connecting said fluid passage to said second passage to permit injection of air through said fluid injection nozzle into said combustion chamber during normal operation or idling.