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US 10,711,681 B2Granted
Two-cycle diesel engine configured for operation with high temperature combustion chamber surfaces
AssigneeDeltaHawk Engines, Inc.
InventorsDouglas A. Doers, Robert A. Greco, Paul Olesen, Dennis Raymond Webb
Life of this patent
Estimating the term…
Abstract
A 2-cycle, direct-injection diesel engine configured to accommodate low cetane diesel and jet fuels. The engine includes combustion chambers having surfaces which are operable at high temperatures during engine operation to increase the combustion rate of low cetane fuels. The engine is further configured to reduce starting times in cold and/or low pressure situations such as those experienced during attempts to restart a plane engine at relatively high altitudes.
Claims20
An engine, comprising:
- an aluminum engine block, comprising:
- a cylinder comprising an intake port proximate to a first side of the cylinder and an exhaust port proximate to a second side of the cylinder opposite the first side;
- and
- a first fluid flow channel located adjacent at least one of the intake port and the exhaust port to cool the cylinder of the engine block;
- a composite sleeve located within the cylinder;
- a head assembly comprising a second fluid flow channel to cool the head assembly engaged with the engine block;
- a fuel injector assembly coupled to the head assembly, the injector assembly comprising:
- a fuel flow channel between a fuel source and an 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 fire plate fixed between the sleeve and the head assembly;
- and
- a piston having a crown and located within the sleeve and configured to oscillate within the sleeve.
11 more elements
A two-cycle diesel engine for operating with high combustion chamber surface temperatures, the engine comprising:
- an aluminum engine block comprising:
- four or more cylinders each comprising an intake port and an exhaust port;
- a first fluid flow channel located adjacent to at least one of the intake port and the exhaust port to cool the cylinder of the engine block;
- and
- four or more metal composite sleeves located within respective cylinders;
- four or more head assemblies each comprising a second fluid flow channel to cool the head assembly coupled the engine block;
- four or more fuel injector assemblies each coupled to a respective head assembly, each injector assembly comprising:
- a fuel flow channel between a fuel source and an 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;
- four or more stainless steel fire plates fixed between the sleeves and the head assemblies;
- and
- four or more aluminum pistons each having a titanium alloy crown located within each sleeve, each piston configured to oscillate within a respective cylinder sleeve.
11 more elements
A two-cycle diesel engine unit, comprising:
- an aluminum engine block, comprising:
- a cylinder comprising an intake port proximate to a first side of the cylinder and an exhaust port proximate to a second side of the cylinder opposite the first;
- a first fluid flow channel located proximate to at least one of the intake port and the exhaust port to cool the cylinder, the first fluid flow channel including a first branch passing over the exhaust port and a second branch passing under the exhaust port;
- a metal composite cylinder sleeve fixed within the cylinder;
- a head assembly comprising threads that engage the head assembly to the engine block, the head assembly comprising a second fluid flow channel to cool the head assembly engaged to the engine block;
- a fuel injector assembly coupled to the head assembly, comprising:
- a fuel flow channel between a fuel source and an 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 Belleville washer located between the head assembly and the stainless steel fire plate;
- a sealing washer located between the stainless steel fire plate and the cylinder sleeve, the sealing washer, fire plate and fuel injector assembly being arranged to close the cylinder sleeve;
- and
- an aluminum piston having a titanium alloy crown and located within the sleeve, the piston being configured to oscillate within the sleeve.
12 more elements
Dependencies are inferred from the claim text.