The piston engine cooling system includes multiple pistons rotatably coupled to a crankshaft. Each piston includes a piston head defining a cooling chamber therein, and a connecting rod coupled to the piston head. The connecting rod includes a connecting rod inlet channel therein allowing oil to ent
The piston engine cooling system includes multiple pistons rotatably coupled to a crankshaft. Each piston includes a piston head defining a cooling chamber therein, and a connecting rod coupled to the piston head. The connecting rod includes a connecting rod inlet channel therein allowing oil to enter the cooling chamber, and a connecting rod outlet channel receiving oil exiting the cooling chamber. The crankshaft defines a crankshaft inlet channel allowing oil to flow through the connecting rod inlet channel, and a crankshaft outlet channel receiving oil flowing through the connecting rod outlet channel.
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What is claimed is: 1. A piston engine cooling system, comprising: a piston head defining a cooling chamber therein, said cooling chamber having a tortuous path therethrough; a connecting rod coupled to said piston head, wherein said connecting rod defines: a connecting rod inlet channel therethrou
What is claimed is: 1. A piston engine cooling system, comprising: a piston head defining a cooling chamber therein, said cooling chamber having a tortuous path therethrough; a connecting rod coupled to said piston head, wherein said connecting rod defines: a connecting rod inlet channel therethrough allowing cooling fluid to enter said cooling chamber; and a connecting rod outlet channel therethrough allowing cooling fluid to exit said cooling chamber; and a crankshaft rotatably coupled to said connecting rod, wherein said crankshaft defines a crankshaft inlet channel therein that is fluidly coupled to said connecting rod inlet channel, and a crankshaft outlet channel therein that is fluidly coupled to said connecting rod outlet channel. 2. The piston engine cooling system of claim 1, wherein said cooling chamber includes cooling fins therein. 3. The piston engine cooling system of claim 2, wherein said cooling fins are interleaved within said cooling chamber. 4. The piston engine cooling system of claim 1, further comprising: a lubrication pressure pump fluidly coupled to said crankshaft outlet channel, wherein said cooling fluid is expelled from said crankshaft outlet channel to said lubrication pressure pump; and a heat exchanger fluidly coupled to said crankshaft inlet channel and said lubrication pressure pump, wherein said cooling fluid expelled from said piston head is cooled down and recycled by said piston engine cooling system. 5. The piston engine cooling system of claim 1, further comprising: a lubrication system storage reservoir fluidly coupled to said crankshaft outlet channel, wherein said cooling fluid is expelled from said crankshaft outlet channel to said lubrication system storage reservoir; and a heat exchanger fluidly coupled to said crankshaft inlet channel and said lubrication system storage reservoir, wherein said cooling fluid expelled from said piston head is cooled down and recycled by said piston engine cooling system. 6. The piston engine cooling system of claim 5, wherein said cooling fluid in said lubrication system storage reservoir is substantially devoid of crankcase ambient air. 7. The piston engine cooling system of claim 1, wherein said cooling fluid is lubrication oil. 8. A piston engine cooling system, comprising: first and second piston heads, each piston head defining therein a respective cooling chamber of multiple cooling chambers; first and second connecting rods coupled to the first and second piston heads, respectively, wherein each connecting rod includes a connecting rod inlet channel therein allowing cooling fluid to enter a respective one of said cooling chambers and a connecting rod outlet channel allowing said cooling fluid to exit said respective one of said cooling chambers; and a crankshaft rotatably coupled to said first and second connecting rods, wherein said crankshaft defines a crankshaft inlet channel allowing cooling fluid to enter said connecting rod inlet channels in said first and second connecting rods in parallel, and a crankshaft outlet channel allowing said cooling fluid to directly exit said connecting rod outlet channels in said first and second connecting rods in parallel. 9. The piston engine cooling system of claim 8, wherein at least one of said cooling chambers defines a tortuous flow path. 10. The piston engine cooling system of claim 8, wherein at least one of said cooling chamber includes first and second sets of cooling fins attached to two opposite sides of said cooling chamber. 11. The piston engine cooling system of claim 10, wherein said first and second sets of cooling fins are interleaved. 12. The piston engine cooling system of claim 8, further comprising: a lubrication pressure pump fluidly coupled to said crankshaft outlet channel receiving said cooling fluid exiting said crankshaft outlet channel; and a heat exchanger fluidly coupled to said crankshaft inlet channel and said lubrication pressure pump, wherein cooling fluid exiting said first and second piston heads is cooled down and recycled by said piston engine cooling system. 13. The piston engine cooling system of claim 8, further comprising: a lubrication system storage reservoir fluidly coupled to said crankshaft outlet channel receiving said cooling fluid exiting said crankshaft outlet channel; and a heat exchanger fluidly coupled to said crankshaft inlet channel and said lubrication system storage reservoir, wherein cooling fluid exiting said first and second piston heads is cooled down and recycled by said piston engine cooling system. 14. The piston engine cooling system of claim 13, wherein cooling fluid in said lubrication system storage reservoir is substantially devoid of crankcase ambient air. 15. The piston engine cooling system of claim 8, wherein cooling fluid entering respective cooling chambers in said first and second piston heads shares a substantially similar set of parameters. 16. The piston engine cooling system of claim 15, wherein said parameters include temperature and flow rate. 17. A method of cooling a piston engine including multiple piston heads, multiple connecting rods, each connecting rod coupled one of the multiple piston heads to at least one crankshaft, said method comprising: injecting cooling lubrication oil into a crankshaft inlet channel inside said crankshaft; flowing said cooling lubrication oil, in parallel, into multiple cooling chambers, each cooling chamber located inside one of the multiple piston heads; transferring heat from the multiple piston heads to said cooling lubrication oil when said cooling lubrication oil flows through the multiple cooling chambers; and expelling said heated lubrication oil from the multiple cooling chambers into a crankshaft outlet channel inside said crankshaft. 18. The method of claim 17, wherein, in a cross-sectional view, said cooling chamber includes a tortuous flow channel. 19. The method of claim 17, wherein each of said multiple cooling chambers includes first and second sets of cooling fins attached to two opposite sides of said cooling chamber. 20. The method of claim 19, wherein the first and second sets of cooling fins are arranged in said cooling chamber in an interleaved order. 21. The method of claim 17, further comprising: transferring said heated lubrication oil from said crankshaft outlet channel to a lubrication pressure pump; and expelling said heated lubrication oil from said lubrication pressure pump to a heat exchanger to cool down said heated lubrication oil. 22. The method of claim 17, further comprising: collecting said heated lubrication oil from said crankshaft outlet channel into a lubrication system storage reservoir; and expelling said heated lubrication oil from said lubrication system storage reservoir to a heat exchanger to cool down said heated lubrication oil. 23. The method of claim 22, wherein said heated lubrication oil in said lubrication system storage reservoir is substantially devoid of crankcase ambient air.
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이 특허를 인용한 특허 (4)
Zhou, Shiguang; Barber, Eva, System with a heat pipe.
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