A cylinder block for a liquid cooled internal combustion engine

摘要

Described herein is a cylinder block (1) for an internal-combustion engine comprising:
- a body (2) including a top face (3), two end faces (4, 6), two side faces (8, 10), and a bottom face (12), where the side faces (8, 10) develop substantially in a longitudinal direction of the cylinder block (1); and
- a plurality of cylinders (C1, C2, C3, C4) traversing the cylinder block (12) from the top face (3) to the bottom face (12), where the cylinders (C1, C2, C3, C4) are set in the aforesaid longitudinal direction,
wherein associated to each cylinder (C1, C2, C3, C4) are a first cavity (16; 28; 40; 52) and a second cavity (18; 30; 42; 54), which are adapted to contain a cooling liquid and extend around respective portions of the cylinder (C1, C2, C3, C4) with an arched geometry, said first and second cavities (16, 18; 28, 30; 40, 42; 52, 54) opening out at the top face (3) and being closed in the proximity of the bottom face (12);
wherein the first and second cavities (16, 18; 28, 30; 40, 42; 52, 54) of each cylinder (C1, C2, C3, C4) are separate from one another;
wherein the first cavity (16; 28; 40; 52) of each cylinder communicates hydraulically with the first cavity of at least one adjacent cylinder so as to define a first cooling jacket (64);
wherein the second cavity (18; 30; 42; 54) of each cylinder communicates hydraulically with the second cavity of at least one adjacent cylinder so as to define a second cooling jacket (66); and
wherein the first and second cooling jackets (64, 66) develop substantially in the longitudinal direction along two sides of the plurality of cylinders (C1, C2, C3, C4).
The cylinder block is characterized in that the first cooling jacket (64) is in fluid communication with a first supply channel (68) having a first inlet port (72), and the second cooling jacket (66) is in fluid communication with a second supply channel (70) having a second inlet port (74). Each of the supply channels (68, 70) is in fluid communication with a supply source (S) from which the cooling liquid is delivered to the first supply channel (68) and to the second supply channel (70) through the first and second inlet ports (72, 74) with a direction of flow such that the cooling liquid goes from the first and second supply channels (68, 70) towards the first and second cooling jackets (64, 66), coming out through the top face (3).