Intake apparatus of engine

Abstract

An intake apparatus of an engine provided with a fuel supply device for supplying fuel into an intake passage. A guide body is disposed in the intake passage located downstream from the fuel supply device, and the guide body may have at least one hole. The volume ratio of the guide body relative to the intake passage range and the volume ratio of the total holes relative to the guide body are ranged in the preferable volume percent.

What we claim is: 
     
         1 . An intake apparatus of an engine provided with a fuel supplying device for supplying fuel into an intake passage, comprising:
 a curved, planer guide body having multiple holes disposed in the intake passage located downstream from the fuel supplying device, wherein,   said guide body is extending in a direction intersecting with a direction of a flow of intake air.   
     
     
         2 . The intake apparatus of  claim 1 , wherein
 the multiple holes located on upstream of the flow of the intake air are different in size from the multiple holes located on downstream of the flow of the intake air.   
     
     
         3 . The intake apparatus of  claim 1 , wherein
 the holes located on upstream of the flow of the intake air are larger and the holes located on downstream of the flow of the intake air are smaller.   
     
     
         4 . The intake apparatus of  claim 1 , wherein
 each of the holes is a choking hole whose passage cross-sectional area is narrowed on one side.   
     
     
         5 . The intake apparatus of  claim 4 , wherein
 the choking hole includes a large-diameter passage portion and a small-diameter passage portion.   
     
     
         6 . The intake apparatus of  claim 4 , wherein
 the choking hole is gradually narrowed from a large-diameter passage to a small-diameter passage.   
     
     
         7 . The intake apparatus of  claim 4 , wherein
 the choking holes are arranged so that narrowed sides the respective choking holes are alternatively located on opposite sides of the guide body.   
     
     
         8 . The intake apparatus of  claim 1 , wherein
 the holes are through holes where passage cross-sectional areas of the respective holes are equal to one another.   
     
     
         9 . The intake apparatus of  claim 1 , wherein
 the guide body having the multiple holes is disposed in the intake passage of a 2-stroke engine.   
     
     
         10 . The intake apparatus of  claim 1 , wherein
 the guide body having the multiple holes is disposed in the intake passage of a 4-stroke engine.   
     
     
         11 . An intake apparatus of an engine provided with a fuel supply device for supplying fuel into an intake passage, comprising:
 a guide body disposed in the intake passage located downstream from the fuel supply device, wherein   a volume ratio of the guide body relative to the intake passage is ranged between 3 volume percent and 15 volume percent.   
     
     
         12 . The intake apparatus of  claim 11  wherein
 the guide body has at least one hole therein. 
 
     
     
         13 . The intake apparatus according to  claim 12 , wherein
 a volume ratio of the total holes in the intake passage relative to the guide body is ranged between 20 volume percent and 48 volume percent.   
     
     
         14 . The intake apparatus according to  claim 11 , wherein
 said intake apparatus has multiple guide bodies.   
     
     
         15 . The intake apparatus according to  claim 12 , wherein
 said intake apparatus has multiple guide bodies.   
     
     
         16 . The intake apparatus according to  claim 13 , wherein
 said intake apparatus has multiple guide bodies.   
     
     
         17 . The intake apparatus of  claim 12  wherein
 said guide body has multiple holes in different directions. 
 
     
     
         18 . The intake apparatus of  claim 12  wherein
 said holes run horizontally and perpendicular to the horizontal hole. 
 
     
     
         19 . The intake apparatus of  claim 11  wherein
 the guide body is disposed in the intake passage of a 2-stroke engine. 
 
     
     
         20 . The intake apparatus according to  claim 11 , wherein
 the guide body is disposed in the intake passage of a 4-stroke engine.