HHO Precision Injection System

Abstract

Timing of HHO gas injection into a 4-stroke engine is optimized based on engine operating parameters to improve fuel economy.

1 - 28 . (canceled) 
     
     
         29 . A method comprising:
 generating HHO gas;   during an intake stroke of an internal combustion engine, providing, to a combustion chamber of the internal combustion engine, a hydrocarbon fuel; and   during less than half of the intake stroke of the internal combustion engine, providing, to the combustion chamber of the internal combustion engine, a portion of the HHO gas.   
     
     
         30 . The method of  claim 29 , comprising:
 before providing the portion of the HHO gas to the combustion chamber, adjusting a temperature of the portion of the HHO gas by exchanging heat between the portion of the HHO gas and an exhaust gas of the internal combustion engine.   
     
     
         31 . The method of  claim 30 , wherein adjusting the temperature of the portion of the HHO gas comprises reducing a temperature of the exhaust gas by a particular number of degrees. 
     
     
         32 . The method of  claim 30 , wherein adjusting the temperature of the portion of the HHO gas comprises increasing a temperature of the exhaust gas by a particular number of degrees. 
     
     
         33 . The method of  claim 29 , wherein providing the portion of the HHO gas to the combustion chamber comprises providing the portion of the HHO gas at a particular pressure to the combustion chamber. 
     
     
         34 . The method of  claim 29 , comprising:
 before providing the portion of the HHO gas to the combustion chamber, providing the portion of the HHO gas to a heat exchanger.   
     
     
         35 . The method of  claim 29 , comprising:
 providing, to a diesel particular filter regenerator system, an additional portion of the HHO gas.   
     
     
         36 . The method of  claim 29 , comprising:
 during an additional intake stroke of the internal combustion engine, providing, to an additional combustion chamber of the internal combustion engine, additional hydrocarbon fuel; and   during less than half of the additional intake stroke of the internal combustion engine, providing, to the additional combustion chamber of the internal combustion engine, an additional portion of the HHO gas.   
     
     
         37 . The method of  claim 29 , wherein generating the HHO gas comprises:
 generating the HHO gas using an electrolysis unit.   
     
     
         38 . The method of  claim 29 , wherein providing, to the combustion chamber of the internal combustion engine, the portion of the HHO gas comprises providing the portion of the HHO gas while the intake stroke is at an angle in a particular range from top-dead-center. 
     
     
         39 . An apparatus comprising:
 an HHO generator that is configured to generate HHO gas;   a first injector that is configured to provide, to a combustion chamber of an internal combustion engine, a hydrocarbon fuel during an intake stroke of the internal combustion engine; and   a second injector that is configured to provide, to the combustion chamber of the internal combustion engine, a portion of the HHO gas during less than half of the intake stroke of the internal combustion engine.   
     
     
         40 . The apparatus of  claim 39 , comprising:
 a heat exchanger that is configured to exchange heat between the portion of the HHO gas and an exhaust gas of the internal combustion engine before providing the portion of the HHO gas to the combustion chamber.   
     
     
         41 . The apparatus of  claim 40 , wherein a temperature of the portion of the HHO gas adjusts based on exchanging heat between the portion of the HHO gas and an exhaust gas of the internal combustion engine 
     
     
         42 . The apparatus of  claim 41 , wherein adjusting the temperature of the portion of the HHO gas comprises reducing a temperature of the exhaust gas by a particular number of degrees. 
     
     
         43 . The apparatus of  claim 41 , wherein adjusting the temperature of the portion of the HHO gas comprises increasing a temperature of the exhaust gas by a particular number of degrees. 
     
     
         44 . The apparatus of  claim 39 , wherein the second injector is configured to provide the portion of the HHO gas to the combustion chamber at a particular pressure to the combustion chamber. 
     
     
         45 . The apparatus of  claim 39 , comprising:
 a diesel particular filter regenerator system that is configured to receive an additional portion of the HHO gas.   
     
     
         46 . The apparatus of  claim 39 , comprising:
 a third injector that is configured to provide, to an additional combustion chamber of the internal combustion engine, additional hydrocarbon fuel during an additional intake stroke of the internal combustion engine; and   a fourth injector that is configured to provide, to the additional combustion chamber of the internal combustion engine, an additional portion of the HHO gas during less than half of the additional intake stroke of the internal combustion engine.   
     
     
         47 . The apparatus of  claim 39 , wherein the HHO generator is an electrolysis unit. 
     
     
         48 . The apparatus of  claim 39 , wherein the second injector is configured to provide, to the combustion chamber of the internal combustion engine, the portion of the HHO gas while the intake stroke is at an angle in a particular range from top-dead-center.