초록 ▼

An internal combustion engine is disclosed which includes a plurality of cylinders split into first and second groups, and an intake passage provided with a throttle valve and bifurcated downstream of the throttle valve into two branches, one communicated with the first group of cylinders and the ot

An internal combustion engine is disclosed which includes a plurality of cylinders split into first and second groups, and an intake passage provided with a throttle valve and bifurcated downstream of the throttle valve into two branches, one communicated with the first group of cylinders and the other communicated through a stop valve with the second group of cylinders. The second group of cylinders are bypassed by an EGR passage provided therein with an EGR valve. Control means is provided for causing the air valve to open a predetermined time after the EGR valve closes when the engine operation is shifted from its low load condition to a high load condition.

대표청구항 ▼

An internal combustion engine comprising: (a) a plurality of cylinders split into first and second groups; (b) an intake passage provided therein with a throttle valve, said intake passage divided downstream of said throttle valve into first and second branches leading to said first and second cylin

An internal combustion engine comprising: (a) a plurality of cylinders split into first and second groups; (b) an intake passage provided therein with a throttle valve, said intake passage divided downstream of said throttle valve into first and second branches leading to said first and second cylinder groups, respectively; (c) a stop valve provided at or near an entrance of said intake passage second branch; (d) an exhaust passage for said first and second cylinder groups; (e) an EGR passage communicating between said exhaust passage and said intake passage second branch; (f) an EGR valve provided in said EGR passage; and (g) control means, responsive to engine load conditions, for disabling said second cylinder group, closing said stop valve, and opening said EGR valve during the occurrence of high engine load conditions, said control means effective for closing said EGR valve and opening said stop valve with a delay relative to the closing of said EGR valve when the engine load changes from the low load conditions to a high load condition.