DIRECT INJECTION TYPE COMBUSTION CHAMBER FOR DIESEL ENGINE

摘要

PROBLEM TO BE SOLVED: To ensure the sufficient volume of a swirl chamber 2 and prevent the occurrence of the insufficiency of air by prolonging the thickness 27 of a spray collision part 11 to increase the amount of spray fuel colliding against the spray collision part 11 and rebounding to the vicinity of a swirl chamber inlet 4 and increase an air use rate and by shortening the thickness 28 of a spray non-collision part 18 to prolong a height 29 from the inner bottom face 24 of the swirl chamber 4 to a ceiling wall 3 forming a spray non-collision part 20. SOLUTION: In a direct injection type combustion chamber for a diesel engine constituted such that a plurality of fuel sprayings 6 are radially performed from a multihole injection nozzle 5 to collide spray fuel against the inner peripheral face 7 of the swirl chamber inlet 4, the thickness 27 of each spray collision part 11 on the inner peripheral face 7 of the swirl chamber inlet 4 is set to be longer than thickness 28 of the spray non-collision part 20 positioned between adjacent spray collision parts 11 and 11.