WO2018004358A1

WO2018004358A1 - Turbocharged two-cycle engine with intake and exhuast valves and higher compression

Info

Publication number: WO2018004358A1
Application number: PCT/NZ2016/050102
Authority: WO
Inventors: Jared PRESCOTT
Original assignee: Prescott Jared
Priority date: 2016-06-28
Filing date: 2016-06-28
Publication date: 2018-01-04

Abstract

A two-cycle engine capable of higher compression works by a cam opening the air intake valve of the engine at top dead centre. Compressed air is filled in the top of the cylinder and the valve shuts. A spray of fuel is injected into the engine and ignited by spark plug immediately and the piston reaches the bottom of its stroke. Kinetic energy of the crank or force of another cylinder combusting returns the piston to top dead centre. During the return to top dead centre the exhaust valve is opened. This process repeats. The pressure of the exhaust gas every two cycles creates heat and pressure before the turbo exhaust inlet. The heat and pressure is contributed to by the pressure of the fuel jet. This fuel injector before the exhaust turbine is provided compressed air from a controlled pressure valve on the compressor outlet of the turbocharger.

Description

TURBOCHARGED TWO-CYCLE ENGINE WITH INTAKE AND EXHUAST VALVES AND

HIGHER COMPRESSION

Descri ption

The crank shaft 20 rotates around crank shaft axis 19.

The piston 17 is placed directly inside the cylinder block. This creates a sealed volume that can contain the desired compressed air content and force of internal combustion for desired engine functionality.

The piston 17 pivots on the piston rod 18 that pivots on the crank shaft 20 at the opposite end. The piston 17 can only move directly up and down the cylinder housing and not rotate. The pivot point of the piston rod 18 on the crank shaft 20 rotates in relation to the position and direction of the piston 17 in the cylinder. The rotation of the crank shaft 18 pulls or pushes on the piston rod 18 that changes the pistons 17 position in the cylinder as the piston rod 18 pivots on the crank shaft and the pistonl7 pivots on the piston rod 18.

The cams numbered 11 and 14 lift the air intake 16 and exhaust valve 15 for the cylinder housing. They are mechanically timed to match the rotations per any time period of the crank shaft 20. The cams are mechanically designed to be push valves up due to gas pressure in the air intake and exhaust.

The turbo 4 comprises of two volumes with turbines that have inlets and out lets for gas that link speed as they are directly connected. One volume is the exhaust. One side is a sealed connection to the engines exhaust port 15. The outlet of the exhaust volume practically should be diverted to away from the engine. The heat and exhaust pressure from the engine spins the turbine at high rotations per duration, linked is the compressor volume its turbine speed matches the exhaust turbine. The compressor side of the turbo 4 has a turbine which blades create at a vacuum for outside air at high rpms. This air is compressed and constantly delivered by sealed tube 1 to the engine cylinder air inlet 16.

Excess boost pressure is achieved by a concept similar to a jet engine. It works by delivering pressurized fuel 6 to injector behind electronic spark 5. The ignited fuel mixture creates heat and pressure behind the exhaust volume of the turbo 4. the expanding gases and heat make the turbine rotate at high speeds. The outlet on the compressor side of the turbo delivers compressed oxygen to the air intake tube. On the side of this air intake tube there is a valve that supplies compressed air to the fuel injector 6 and electronic spark 5. The fuel injector 6 pressure is adjusted according to the air pressure of the tube 1 connecting the air intake to the fuel injector 6 and electronic spark 5. This pressure valve seals air with a half shape of the intake tube that has a hole that matches the outside tube when the air pressure valve hasn't retracted. It mostly shuts off the air supply when desired boost pressure is met. This engine also generates better exhaust and heat pressure as it ignites fuel/air mixtures every second cycle.

The throttle 7 works by accurately restricting compressed air flow to the intake chamber, and it opens accordingly to user input. It allows only enough air passed to supply the engine with the air it needs for rotations per duration. It also maintains rotations per duration by the quantity of fuel injected in the engine cylinder.

Claims

Claims (13)

1. A 2 cycle turbo charged engine comprising: a crankshaft rotatable about a crankshaft axis;

a 2 cycle engine with no ports on the engine bore that has cam controlled valve ports on the head; a cam controlled valve port that allows entry of compressed air into the cylinder at near top dead centre of the piston that closes near after the piston reaches top dead centre to allow for fuel injection and ignition for the power stroke; a cam controlled valve port that opens from the beginning of the exhaust stroke and closes the valve just before the intake cam opens;

2. An engine that is turbocharged with a cross over passage from a pressure valve controlled outlet on the compressor side of a turbo to before the exhaust turbine for purposes of providing oxygen for a fuel burner before the exhaust turbo inlet.