US 8,464,671 B2Granted

Horizontally opposed center fired engine

OwnerBo Zhouinventor

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Abstract

The horizontally opposed center fired engine improves on the traditional design of the horizontally opposed engines and center fired engines with a better engine geometry. The present invention utilizes four pairs of opposing pistons to compress a larger volume of air-fuel mixture within four different cylinders. The four different cylinders are radially positioned around a center axle in order to achieve a perfectly symmetric engine geometry. The center axle consists of two different shafts spinning in two different directions, which could drastically reduce engine vibrations in the present invention. Engine vibrations are caused by a change in engine speed and result in a loss of energy. Due to the design, the present invention will only experience energy loss in the form of entropy and friction. Thus, the present invention can convert a higher percentage of chemical energy into mechanical energy than any other internal combustion engine.

Claims20

Dependent claims

A horizontally opposed center fired engine comprises,

a first internal combustion mechanism;
a second internal combustion mechanism;
a third internal combustion mechanism;
a fourth internal combustion mechanism;
a first timing mechanism;
a second timing mechanism;
a main axle;
said first internal combustion mechanism, said second internal combustion mechanism, said third internal combustion mechanism, and said fourth internal combustion mechanism each comprises a cylinder, a front piston, a front connecting rod, a front crankshaft, a front crankshaft gear, a back piston, a back connecting rod, a back crankshaft, a back crankshaft gear, a center space, a left block, a right block, an intake block, an intake mechanism, an exhaust block, an exhaust mechanism, and a plurality of assembly divisions;
said first timing mechanism and said second timing mechanism each comprises a timing shaft, a main timing gear, a intake timing gear, and an exhaust timing gear;
said main axle comprises a front shaft, a front flywheel, a front input gear, a front axle gear, a front output, a back shaft, a back flywheel, a back input gear, a back axle gear, a back output, a first side gear, and a second side gear;
and
said intake mechanism and said exhaust mechanism each comprises a left port, a right port, a left valve, a right valve, a left valve guide, a right valve guide, a left valve spring, a right valve spring, a left spring cavity, a right spring cavity, a camshaft, and a camshaft gear.

9 more elements

A horizontally opposed center fired engine comprises,

a first internal combustion mechanism;
a second internal combustion mechanism;
a third internal combustion mechanism;
a fourth internal combustion mechanism;
a first timing mechanism;
a second timing mechanism;
a main axle;
said first internal combustion mechanism, said second internal combustion mechanism, said third internal combustion mechanism, and said fourth internal combustion mechanism each comprises a cylinder, a front piston, a front connecting rod, a front crankshaft, a front crankshaft gear, a back piston, a back connecting rod, a back crankshaft, a back crankshaft gear, a center space, a left block, a right block, an intake block, an intake mechanism, an exhaust block, an exhaust mechanism, and a plurality of assembly divisions;
said first timing mechanism and said second timing mechanism each comprises a timing shaft, a main timing gear, a intake timing gear, and an exhaust timing gear;
said main axle comprises a front shaft, a front flywheel, a front input gear, a front axle gear, a front output, a back shaft, a back flywheel, a back input gear, a back axle gear, a back output, a first side gear, and a second side gear;
said intake mechanism and said exhaust mechanism each comprises a left port, a right port, a left valve, a right valve, a left valve guide, a right valve guide, a left valve spring, a right valve spring, a left spring cavity, a right spring cavity, a camshaft, and a camshaft gear;
said main axle being located in between said first internal combustion mechanism and said third internal combustion mechanism;
said main axle being located in between said second internal combustion mechanism and said fourth internal combustion mechanism;
said first internal combustion mechanism, said second internal combustion mechanism, said third internal combustion mechanism, and said fourth internal combustion mechanism being positioned equidistant from said main axle;
said fourth internal combustion mechanism and said second internal combustion mechanism being positioned equidistant from said first internal combustion mechanism;
said first internal combustion mechanism and said third internal combustion mechanism being positioned equidistant from said second internal combustion mechanism;
said second internal combustion mechanism and said fourth internal combustion mechanism being positioned equidistant from said third internal combustion mechanism;
said third internal combustion mechanism and said first internal combustion mechanism being positioned equidistant from said fourth internal combustion mechanism;
said main axle being positioned in between said first timing mechanism and said second timing mechanism;
and
said first timing mechanism and said second timing mechanism being positioned equidistant from said main axle.

18 more elements

A horizontally opposed center fired engine comprises,

a first internal combustion mechanism;
a second internal combustion mechanism;
a third internal combustion mechanism;
a fourth internal combustion mechanism;
a first timing mechanism;
a second timing mechanism;
a main axle;
said first internal combustion mechanism, said second internal combustion mechanism, said third internal combustion mechanism, and said fourth internal combustion mechanism each comprises a cylinder, a front piston, a front connecting rod, a front crankshaft, a front crankshaft gear, a back piston, a back connecting rod, a back crankshaft, a back crankshaft gear, a center space, a left block, a right block, an intake block, an intake mechanism, an exhaust block, an exhaust mechanism, and a plurality of assembly divisions;
said first timing mechanism and said second timing mechanism each comprises a timing shaft, a main timing gear, a intake timing gear, and an exhaust timing gear;
said main axle comprises a front shaft, a front flywheel, a front input gear, a front axle gear, a front output, a back shaft, a back flywheel, a back input gear, a back axle gear, a back output, a first side gear, and a second side gear;
said intake mechanism and said exhaust mechanism each comprises a left port, a right port, a left valve, a right valve, a left valve guide, a right valve guide, a left valve spring, a right valve spring, a left spring cavity, a right spring cavity, a camshaft, and a camshaft gear;
said main axle being located in between said first internal combustion mechanism and said third internal combustion mechanism;
said main axle being located in between said second internal combustion mechanism and said fourth internal combustion mechanism;
said first internal combustion mechanism, said second internal combustion mechanism, said third internal combustion mechanism, and said fourth internal combustion mechanism being positioned equidistant from said main axle;
said fourth internal combustion mechanism and said second internal combustion mechanism being positioned equidistant from said first internal combustion mechanism;
said first internal combustion mechanism and said third internal combustion mechanism being positioned equidistant from said second internal combustion mechanism;
said second internal combustion mechanism and said fourth internal combustion mechanism being positioned equidistant from said third internal combustion mechanism;
said third internal combustion mechanism and said first internal combustion mechanism being positioned equidistant from said fourth internal combustion mechanism;
said main axle being positioned in between said first timing mechanism and said second timing mechanism;
said first timing mechanism and said second timing mechanism being positioned equidistant from said main axle;
said front piston and said back piston being encircled by said cylinder;
said front piston being positioned opposite to said back piston within said cylinder;
said front piston having a front conformed surface;
said front connecting rod being jointly connected to said front piston opposite to said front conformed surface;
said front crankshaft being jointly connected to said front connecting rod opposite of said front piston;
said front crankshaft gear being concentrically connected to said front crankshaft;
said back piston having a back conformed surface;
said back connecting rod being jointly connected to said back piston opposite to said back conformed surface;
said back crankshaft being jointly connected to said back connecting rod opposite of said back piston;
said back crankshaft gear being concentrically connected to said back crankshaft;
said cylinder and said intake block being traversed through by said left port of said intake mechanism and said right port of said intake mechanism;
said cylinder and said exhaust block being traversed through by said left port of said exhaust mechanism and said right port of said exhaust mechanism;
said left valve guide of said intake mechanism and said right valve guide of said intake mechanism being positioned within said intake block;
said left valve guide of said exhaust mechanism and said right valve guide of said exhaust mechanism being positioned within said exhaust block;
said left spring cavity of said intake mechanism and said right spring cavity of said intake mechanism traversing through said cylinder and into said intake block;
and
said left spring cavity of said exhaust mechanism and said right spring cavity of said exhaust mechanism traversing through said cylinder and into said intake block.

34 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/204,484Filed 5 Aug 2011 · us provisional application
Priority: 9 Aug 2010
Published: US 2012/0031379 A19 Feb 2012
Granted: 18 Jun 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F02B 75/282
Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders: the pistons having equal strokes
F01B 9/042
With rotary main shaft other than crankshaft: the connections comprising gear transmissions
F01L 1/026
Valve drive: gear drive
F01L 1/04
Valve drive: by means of cams, camshafts, cam discs, eccentrics or the like

Family

Application61/372,032Us provisional application · filed 9 Aug 2010
US 2012/0031379 A1Pre-grant publication · published 9 Feb 2012
US 8,464,671 B2This patent

From the US filing history. Foreign family members aren’t listed.

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