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US 9,677,468 B2Granted
Two-cycle pneumatic injection engine
OwnerKan K Chenginventor
Life of this patent
Estimating the term…
Abstract
A two-cycle engine that includes a high pressure fuel pump that pressurizes fuel to produce pressurized fuel and pumps the pressurized fuel from a fuel controller to a fuel injector. The fuel injector injects the pressurized fuel into a cylinder. A high pressure air pump pressurizes air to produce pressurized air and pumps the pressurized air from an air controller to an air injector. The air injector injects the pressurized air into the cylinder.
Claims20
A two-cycle engine, comprising:
- a cylinder;
- a fuel controller that receives fuel from a fuel reservoir;
- a fuel injector;
- an air controller that receives air;
- an air injector;
- a piston assembly within the cylinder, the piston assembly including a piston and a sealing mechanism;
- a high pressure air pump that pressurizes air to produce pressurized air and pumps the pressurized air from the air controller to the air injector, the air injector injecting the pressurized air into the cylinder as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, the high pressure air pump including:
- a high pressure pump shaft, the high pressure pump shaft being at least partially located within the cylinder so that as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, pressure on the high pressure pump shaft from within the cylinder results in a pumping action that operates the high pressure air pump to pressurize the air to produce the pressurized air;
- and,
- combinational valves, the fuel controller being controlled by the combinational valves to provide for fuel injection with timing and amount being dynamically calculated by a computer depending on fuel properties, emission and load change;
- wherein the fuel controller includes a safety valve set to a safe pressure that bleeds fuel to a low pressure fuel line when the high pressure fuel pump and the fuel controller exceed a maximum pressure.
8 more elements
A two-cycle engine, comprising:
- a cylinder;
- a fuel controller that receives fuel from a fuel reservoir;
- a fuel injector;
- an air controller that receives air;
- an air injector;
- a piston assembly within the cylinder, the piston assembly including a piston and a sealing mechanism;
- and,
- a high pressure air pump that pressurizes air to produce pressurized air and pumps the pressurized air from the air controller to the air injector, the air injector injecting the pressurized air into the cylinder as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, the high pressure air pump including:
- a high pressure pump shaft, the high pressure pump shaft being at least partially located within the cylinder so that as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, pressure on the high pressure pump shaft from within the cylinder results in a pumping action that operates the high pressure air pump to pressurize the air to produce the pressurized air;
- wherein the cylinder has two upper trigger posts located at a top of the cylinder so that when the piston assembly is close to a top dead center (TDC) position, the two upper trigger posts push a piston slide valves pusher and squeeze piston slide valves to an extend position.
7 more elements
A two-cycle engine, comprising:
- a cylinder;
- a fuel controller that receives fuel from a fuel reservoir;
- a fuel injector;
- an air controller that receives air;
- an air injector;
- a piston assembly within the cylinder, the piston assembly including a piston and a sealing mechanism;
- a high pressure air pump that pressurizes air to produce pressurized air and pumps the pressurized air from the air controller to the air injector, the air injector injecting the pressurized air into the cylinder as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, the high pressure air pump including:
- a high pressure pump shaft, the high pressure pump shaft being at least partially located within the cylinder so that as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, pressure on the high pressure pump shaft from within the cylinder results in a pumping action that operates the high pressure air pump to pressurize the air to produce the pressurized air;
- a main shaft;
- a crankshaft offset from the main shaft;
- a flywheel that rotates around the main shaft;
- a link bar is attached to the crankshaft and rotates with the crankshaft, the crankshaft being connected to a rod of the piston assembly, wherein a drive pole connected to the flywheel synchronizes rotation of the link bar around the main shaft so that a power stroke where the piston travels from the TDC position to a bottom dead center (BDC) position is longer in duration than a return stroke where the piston travels from the BDC position to the TDC position.
9 more elements
A two-cycle engine, comprising:
- a cylinder;
- a fuel controller that receives fuel from a fuel reservoir;
- a fuel injector;
- an air controller that receives air;
- an air injector;
- a piston assembly within the cylinder, the piston assembly including a piston and a sealing mechanism;
- a high pressure air pump that pressurizes air to produce pressurized air and pumps the pressurized air from the air controller to the air injector, the air injector injecting the pressurized air into the cylinder as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, the high pressure air pump including:
- a high pressure pump shaft, the high pressure pump shaft being at least partially located within the cylinder so that as the piston approaches top dead center (TDC) during a piston upward stroke of the two-cycle engine, pressure on the high pressure pump shaft from within the cylinder results in a pumping action that operates the high pressure air pump to pressurize the air to produce the pressurized air;
- and,
- combinational valves that bleed a partial amount of high pressure air back to a low pressure air input port, a computer controlling a total amount of air to be bled back to the low pressure air supply input port;
- wherein the air controller includes a safety valve set to a safe pressure that bleeds air to a low pressure air supply line when the high pressure air pump and air fuel controller exceed a maximum pressure.
8 more elements
Dependencies are inferred from the claim text.