Heat-insulating engine with swirl chamber

A heat-insulating engine with swirl chamber which includes a cylinder block having cylinders, a cylinder head fitted to said cylinder block, pistons reciprocating inside said cylinders, swirl chamber blocks of a heat-insulating structure disposed in said cylinder head and swirl chambers formed in said swirl chamber blocks, and which is operated sequentially in four-stroke cycle of an intake stroke, a compression stroke, an expansion stroke and an exhaust stroke comprising:

• subsidiary nozzles having injection ports thereof opened to said swirl chambers, and subsidiary nozzles injecting fuel from the second half of said intake stroke to said compression stroke through said injection ports;
• a fuel pressurization pump for supplying a low pressure fuel to said subsidiary nozzles;
• main nozzles having injection ports thereof opened to said swirl chambers and injecting a main fuel amount from the second half of said compression stroke to the first half of said expansion stroke following the fuel injection by said subsidiary nozzles;
• a fuel injection pump for supplying the fuel to said main nozzles;
• sensors for detecting the operating conditions of the engine;
• and
• a controller controlling the flow rate of the fuel injected from said subsidiary nozzles in response to the detection signals from said sensors and controlling subsidiary injection of the fuel from the second half of said intake stroke to said compression stroke.

A heat-insulating engine with swirl chamber which includes a cylinder block having cylinders, a cylinder head fitted to said cylinder block, pistons reciprocating inside said cylinders, a crank shaft for reciprocating said pistons inside said cylinders, swirl chamber blocks of a heat-insulating structure disposed in said cylinder head and swirl chambers formed in said swirl chamber blocks, and which is operated sequentially in four-stroke cycle of an intake stroke, a compression stroke, an expansion stroke and an exhaust stroke comprising:

• subsidiary nozzle having injection ports thereof opened to said swirl chambers, said subsidiary nozzles injecting fuel along the inner wall surfaces of said swirl chamber blocks from the second half of said intake stroke to said compression stroke through injection ports;
• a fuel pressurization pump for supplying a low pressure fuel to said subsidiary nozzles;
• main nozzles having injection ports thereof opened to said swirl chambers and injecting a main fuel amount into said swirl chambers from the second half of said compression stroke to the first half of said expansion stork following said fuel injection by said subsidiary nozzles;
• a fuel injection pump for supplying the fuel to said main nozzles;
• and
• rotary motion transmission means for transmitting the rotary motion of said crank shaft in order to operate said fuel injection pump and said fuel pressurization pump.

A heat-insulating engine with swirl chamber which includes a cylinder block having cylinders, a cylinder head fitted to said cylinder block, pistons reciprocating inside said cylinders, swirl chamber blocks of a heat-insulating structure disposed in said cylinder head and swirl chambers formed in said swirl chamber blocks, and which is operated sequentially in four-stroke cycle of an intake stroke, a compression stroke, an expansion stroke and an exhaust stroke comprising:

• nozzles having injection ports thereof opened to said swirl chambers and injecting fuel to said swirl chambers through said injection ports;
• a fuel pressurization pump for supplying the fuel to said nozzles;
• sensors for detecting the operating conditions of the engine;
• and
• a controller for controlling the flow rate of the fuel injected from said nozzles in response to the detection signals of said sensors, injecting a subsidiary fuel amount along the inner wall surfaces of said swirl chamber through said injection ports from the second half of said intake stroke to said compression stroke, and then injecting a main fuel amount through said injection ports from the second half of said compression stroke to said expansion stroke.

A heat-insulating engine with swirl chamber which includes a cylinder block having cylinders, a cylinder head fitted to said cylinder block, pistons reciprocating inside said cylinders, a crank shaft for reciprocating said pistons inside said cylinders, swirl chamber blocks of a heat-insulating structure disposed in said cylinder head and swirl chambers formed in said swirl chamber blocks, and which is operated sequentially in four-stroke cycle of an intake stroke, a compression stroke, an expansion stroke and an exhaust stroke comprising:

• nozzles having injection ports thereof opened to said swirl chambers and injecting fuel to said swirl chambers through said injection ports;
• a fuel pressurization pump for supplying the fuel to said nozzles;
• sensors for detecting the operating conditions of the engine;
• a controller for controlling the flow rate of the fuel injected from said nozzles in response to the detection signals of said sensors, injecting a subsidiary fuel amount along the inner wall surfaces of said swirl chambers through said injection ports from the second half of said intake stroke to said compression stroke and then injecting a main fuel amount through said injection ports from the second half of said compression stroke to said expansion stroke;
• and
• rotary motion transmission means for transmitting the rotary motion of said crank shaft in order to operate said fuel pressurization pump.