HHO Precision Injection System
Timing of HHO gas injection into a 4-stroke engine is optimized based on engine operating parameters to improve fuel economy.
1 . A method for increasing fuel economy of an internal combustion engine combusting a quantity of carbonaceous fuel, comprising:
delivering a quantity of HHO gas into a stream of oxygen-containing gas to at least one combustion chamber of the internal combustion engine during a portion of an intake stroke of at least one combustion cylinder of the internal combustion engine.
2 . The method of claim 1 , wherein the portion is less than 70% of the intake stroke.
3 . The method of claim 1 , wherein the portion is less than 50% of the intake stroke.
4 . The method of claim 1 , wherein the during a portion of an intake stroke is when the intake stroke is at an angle of at least 10° from top-dead-center.
5 . The method of claim 1 , wherein the during a portion of an intake stroke is when the intake stroke is at an angle in the range of 0-40° from top-dead-center.
6 . The method of claim 1 , wherein the internal combustion engine is a 4-stroke engine.
7 . The method of claim 1 , wherein the quantity of HHO gas is air-free prior to the delivery into the stream of oxygen-containing gas.
8 . The method of claim 1 , wherein the method improves fuel economy by at least 10%.
9 . The method of claim 1 , wherein the method improves fuel economy by at least 20%.
10 . The method of claim 1 , wherein the quantity of carbonaceous fuel comprises a biofuel.
11 . The method of claim 1 , further comprising delivering the quantity of HHO gas into the stream of oxygen-containing gas within 3 inches of at least one combustion chamber inlet orifice of the internal combustion engine.
12 . The method of claim 11 , wherein the at least one combustion chamber inlet orifice comprises an air intake valve.
13 . The method of claim 11 , wherein the quantity of HHO gas is delivered air-free.
14 . The method of claim 1 , wherein the delivered quantity of HHO gas is in the range of 2-5 liters of HHO gas per hour per liter of displacement of the internal combustion engine.
15 . The method of claim 14 , wherein the method reduces particulate emissions by at least 10%.
16 . The method of claim 14 , wherein the method reduces engine-out emissions by at least 10%.
17 . The method of claim 14 , wherein the method reduces soot emissions by at least 10%.
18 . The method of claim 14 , wherein the method reduces a combustion exhaust temperature by at least 30° F.
19 . The method of claim 14 , wherein the delivered quantity of HHO gas is less than 250 ppm HHO gas relative to the weight of the quantity of carbonaceous fuel.
20 . The method of claim 1 , further comprising: delivering a further quantity of HHO gas to a diesel particulate filter (DPF) regenerator system.
21 . The method of claim 1 , wherein the quantity of HHO gas is passed through a heat exchanger prior to the delivering.
22 . The method of claim 21 , wherein the heat exchanger receives an engine exhaust stream.
23 . The method of claim 21 , wherein the heat exchanger receives an engine coolant stream.
24 . A method for delivering precision quantities of in-situ generated HHO gas about an internal combustion engine, comprising:
delivering separate independent quantities of HHO gas during independent portions of at least two air intake strokes to at least two out-of-phase combustion cylinders of the internal combustion engine.
25 . The method of claim 24 , wherein the portions of the at least two air intake strokes are less than 70% of the of at least two air intake strokes.
26 . The method of claim 24 , wherein the delivering the separate independent quantities of HHO gas comprises: delivering a first quantity of HHO gas during a portion of an intake stroke of a first combustion cylinder, the portion of the intake stroke of the first combustion cylinder less than 70% of the intake stroke; and delivering a second quantity of HHO gas during an intake stroke of a second combustion cylinder, the intake stroke of the first combustion cylinder out of phase with the intake stroke of the second combustion cylinder.
27 . The method of claim 24 , wherein the delivering the separate independent quantities of HHO gas comprises: delivering a first quantity of HHO gas during an intake stroke of a first combustion cylinder at a crankshaft angle in the range of 0-40° from top-dead-center of the first combustion cylinder; and delivering a second quantity of HHO gas during an intake stroke of a second combustion cylinder, the intake stroke of the first combustion cylinder out of phase with the intake stroke of the second combustion cylinder.
28 . A method for increasing carbonaceous fuel economy of an internal combustion engine, comprising:
i) delivering a first quantity of HHO gas in a first stream of oxygen-containing gas to within 3 inches of a first combustion chamber inlet orifice of a first combustion chamber of the internal combustion engine during a portion of an intake stroke of a first combustion cylinder at an angle in the range of 0-40° from top-dead-center of the first combustion cylinder, the first combustion cylinder comprising the first combustion chamber;
ii) delivering a second quantity of HHO gas in a second stream of oxygen-containing gas to within 3 inches of a second combustion chamber inlet orifice of a second combustion chamber of the internal combustion engine during a portion of an intake stroke of a second combustion cylinder at an angle in the range of 0-40° from top-dead-center of the second combustion cylinder, the second combustion cylinder comprising the second combustion chamber; and
iii) delivering at least a third quantity of HHO gas in at least a third stream of oxygen-containing gas to at least a third combustion chamber inlet orifice of at least a third combustion chamber of the internal combustion engine.