Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces

A two-cycle diesel engine for operating with high combustion chamber surface temperatures, the engine comprising:

• an aluminum engine block including at least four cylinders each including a first intake port and a first exhaust port, the engine block including a first fluid flow channel for cooling the engine block and a second fluid flow channel located at the exhaust ports to cool the portions of the cylinders proximate the exhaust ports;
• at least four cylinder sleeves each having a top end and a bottom end and fabricated from a metal composite to each include a second intake port and a second exhaust port proximate the bottom ends, the sleeves being fastened to the interior of a respective cylinder with the intake ports being in fluid communication and the exhaust ports being in fluid communication;
• at least four head assemblies engaged with the engine block, the head assemblies each including a third cooling fluid flow channel;
• at least four fuel injector assemblies each including an injector tip, the assemblies each supported by a respective head assembly, the injector assemblies each including a fuel flow channel between a fuel source and the injector tip, a return fuel channel between the injector tip and the fuel source and a cooling fuel channel between the injector tip and the fuel source;
• at least four stainless steel fire plates each resiliently supported between the top end of respective cylinder sleeves and the head assemblies to cooperate with the fuel injector assembly to close the top end of a respective cylinder sleeve;
• a crank shaft coupled to at least four connecting rods;
• at least four aluminum pistons each having a titanium alloy crown, the pistons being located within a respective sleeve and connected to a respective connecting rod to move the crown between the top of the cylinder sleeve, and below the second intake and exhaust ports;
• a turbocharger including a turbine coupled to at least one of the exhaust ports and a compressor including an input coupled to an air filter and an output;
• and
• a supercharger including a compressor coupled to the output and at least one of the intake ports.

An engine unit comprising:

• an engine block including at least one cylinder including a first intake port and a first exhaust port, the engine block including a first fluid flow channel for cooling the engine block and a second fluid flow channel located at the exhaust port to cool the portion of the cylinder proximate the exhaust port, the second fluid flow channel including a first branch passing over the top portion of the first exhaust port and a second branch passing under the bottom portion of the first exhaust port.
• a cylinder sleeve having a top end and a bottom end, and fabricated from a metal composite to include a second intake port and a second exhaust port proximate the bottom end, the sleeve being fastened to the interior of the cylinder with the intake ports being in fluid communication and the exhaust ports being in fluid communication;
• a head assembly engaged with the engine block, the head assembly including threads for engaging the head to the engine block and including a third cooling fluid flow channel;
• a fuel injector assembly including an injector tip, the assembly supported by the head assembly, the injector assembly including a fuel flow channel between a fuel source and the injector tip, a return fuel channel between the injector tip and the fuel source and a cooling fuel channel between the injector tip and the fuel source;
• a stainless steel fire plate;
• a deflected belleville washer being located between the head assembly and the stainless steel fire plate;
• a sealing washer being located between the stainless steel fire plate and the top end of the cylinder sleeve, the sealing washer, fire plate and fuel injector assembly being arranged to close the top end of the cylinder sleeve;
• a crank shaft coupled to a connecting rod;
• an aluminum piston having a titanium alloy crown, the piston being located within the sleeve and connected to the connecting rod to move the crown between the top of the cylinder sleeve, and below the second intake and exhaust ports;
• a wrist pin supported at its ends and center by the piston, wherein the end of the connecting rod includes a saddle which surrounds less than 180 degrees of the wrist pin and is fastened to the wrist pin;
• a turbocharger including a turbine coupled to the exhaust ports and a compressor including an input coupled to an air filter and an output;
• and
• a supercharger including a compressor coupled to the compressor output and the intake ports.