INTERNAL COMBUSTION ENGINE WITH HIGH TEMPERATURE FUEL INJECTION
First Claim
1. A method for controlling an internal combustion engine, the method comprising:
- operating the engine in a spark ignition zone at a low load, the low load being less than a load threshold; and
operating the engine in a compression ignition zone at a high load, the high load being greater than the load threshold,wherein the load threshold increases with one or more of increased engine speed, reduced engine coolant temperature and reduced intake pressure.
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Accused Products
Abstract
Set forth herein are apparatuses and systems that utilize high temperature fuel injection to eliminate knocking within a combustion systems, and more particularly internal combustion engines. In some embodiments, the combustion system of the present invention can eliminate knocking through the use of high compression ratios and high intake boost pressures. The combustion system can have a high exhaust gas recirculation (EGR) tolerance, as well as an increased range of fuel-air ratio with improved ignitability and increased combustion speed of the system. In some embodiments, combustion in the present invention takes place using a compression ignition process, a spark assisted compression ignition process or a combination thereof.
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Citations
19 Claims
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1. A method for controlling an internal combustion engine, the method comprising:
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operating the engine in a spark ignition zone at a low load, the low load being less than a load threshold; and operating the engine in a compression ignition zone at a high load, the high load being greater than the load threshold, wherein the load threshold increases with one or more of increased engine speed, reduced engine coolant temperature and reduced intake pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An engine control unit (ECU) comprising:
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a processor; and a computer-readable medium that stores instructions that when executed by the processor perform the method comprising; operating an engine in a spark ignition zone at a low load, the low load being less than a load threshold; and operating the engine in a compression ignition zone at a high load, the high load being greater than the load threshold, wherein the load threshold increases with one or more of increased engine speed, reduced engine coolant temperature and reduced intake pressure.
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19. An engine comprising:
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an engine control unit (ECU) that stores instructions that when executed by the ECU perform the method comprising; operating the engine in a spark ignition zone at a low load, the low load being less than a load threshold; and operating the engine in a compression ignition zone at a high load, the high load being greater than the load threshold, wherein the load threshold increases with one or more of increased engine speed, reduced engine coolant temperature and reduced intake pressure.
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Specification