Crankcase Assembly for a Reciprocating Machine

A method of assembling a crankcase assembly for a reciprocating machine, comprising the acts of:

• providing a crankcase configured to receive a crankshaft therein;
• inserting a wet cylinder liner into the crankcase;
• mounting a cylinder head configured to charge gas into the wet cylinder liner and discharge pressurized gas from the cylinder on the crankcase at a cylinder head side of the wet cylinder liner opposite a crankshaft side the wet cylinder liner with a cylinder head gasket between the cylinder head and the crankcase,
• wherein
• the cylinder head gasket is configured to prevent leakage of pressurized gas from the wet cylinder liner and is disposed circumferentially spaced from an inner wall of the wet cylinder liner, and
• upon inserting the wet cylinder liner into the crankcase
• a circumferential coolant channel is formed between the inner crankcase wall and an outer wall of the wet cylinder liner,
• a lower sealing arrangement is located between the inner crankcase wall and the wet cylinder liner on a crankshaft side of the circumferential coolant channel, the lower sealing arrangement being configured to prevent leakage of coolant fluid,
• a first upper sealing arrangement is located between the inner crankcase wall and the wet cylinder liner on a cylinder head side of the circumferential coolant channel, the first upper sealing arrangement being configured to prevent leakage of coolant fluid;
• and
• a second upper sealing arrangement spaced axially apart from the first upper sealing arrangement located between the first upper sealing arrangement and an inner region of the wet cylinder liner in which gas is pressurized, the second upper sealing arrangement being configured to prevent pressurized gas being applied to the first upper sealing arrangement.

A crankcase assembly for a reciprocating machine, comprising:

• a crankcase configured to receive a crankshaft therein;
• a wet cylinder liner, the cylinder being located in the crankcase;
• a cylinder head configured to charge gas into the wet cylinder liner and discharge pressurized gas from the wet cylinder liner, the cylinder head being mounted on the crankcase at a cylinder head side of the wet cylinder liner opposite a crankshaft side the cylinder;
• a cylinder head sealing means between the cylinder head and the crankcase for preventing leakage of pressurized gas from the wet cylinder liner, the cylinder head sealing means being disposed circumferentially spaced from an inner wall of the wet cylinder liner,
• a circumferential coolant channel formed between the inner crankcase wall and an outer wall of the wet cylinder liner;
• a lower sealing means located between the inner crankcase wall and the wet cylinder liner on a crankshaft side of the circumferential coolant channel for preventing leakage of coolant fluid;
• a first upper sealing means located between the inner crankcase wall and the wet cylinder liner on a cylinder head side of the circumferential coolant channel, the first upper sealing means being configured to prevent leakage of coolant fluid;
• and
• a second upper sealing means spaced axially apart from the first upper sealing means located between the first upper sealing means and an inner region of the wet cylinder liner in which gas is pressurized for preventing pressurized gas being applied to the first upper sealing means.

A cylinder liner for a wet liner crankcase of a reciprocating machine, comprising:

• a wet cylinder liner, the wet cylinder liner being configured to receive a reciprocating piston therein and to be inserted into the wet liner crankcase,
• wherein an outer wall of the wet cylinder liner is configured to cooperate with an inner wall of the wet liner crankcase to
• form a circumferential coolant channel therebetween, and
• receive therebetween
• a lower sealing arrangement on a crankshaft side of the circumferential coolant channel configured to prevent leakage of coolant fluid,
• a first upper sealing arrangement on a cylinder head side of the circumferential coolant channel configured to prevent leakage of coolant fluid;
• and
• a second upper sealing arrangement spaced axially apart from the first upper sealing arrangement located between the first upper sealing arrangement and an inner region of the wet cylinder liner in which gas is pressurized, the second upper sealing arrangement being configured to prevent pressurized gas being applied to the first upper sealing arrangement.

A wet liner crankcase of a reciprocating machine, comprising:

• a crankcase configured to receive a crankshaft therein, the crankcase being configured to receive a wet cylinder liner inserted therein,
• wherein at an inner wall of the crankcase, the crankcase is configured to cooperate with an outer wall of the wet cylinder liner to
• form a circumferential coolant channel therebetween, and
• receive therebetween
• a lower sealing arrangement on a crankshaft side of the circumferential coolant channel configured to prevent leakage of coolant fluid,
• a first upper sealing arrangement on a cylinder head side of the circumferential coolant channel configured to prevent leakage of coolant fluid;
• and
• a second upper sealing arrangement spaced axially apart from the first upper sealing arrangement located between the first upper sealing arrangement and an inner region of the wet cylinder liner in which gas is pressurized, the second upper sealing arrangement being configured to prevent pressurized gas being applied to the first upper sealing arrangement.