Vehicle engine

Patent metadata

Field	Value
Publication number	US-2017167361-A1
Application number	US-201615138900-A
Country	US
Kind code	A1
Filing date	Apr 26, 2016
Priority date	Dec 15, 2015
Publication date	Jun 15, 2017
Grant date	—

Abstract

A vehicle engine includes a cylinder block, a cylinder head installed at an upper portion of the cylinder block and forming a combustion chamber therein, a piston installed at the cylinder block and reciprocating in the cylinder block so that the volume of the combustion chamber is compressed or expanded, an injector installed at the cylinder head for injecting fuel into the combustion chamber, a spark plug installed at the cylinder head for igniting the fuel injected from the injector, and a voltage generating member installed inside the piston so that a voltage is generated by a pressure generated during a compression stroke of the piston.

First claim

What is claimed is:

1 . A vehicle engine comprising:
a cylinder block; a cylinder head installed at an upper portion of the cylinder block and forming a combustion chamber therein; a piston installed at the cylinder block and reciprocating in the cylinder block so that the volume of the combustion chamber is compressed or expanded; an injector installed at the cylinder head for injecting fuel into the combustion chamber; a spark plug installed at the cylinder head for igniting the fuel injected from the injector; and a voltage generating member installed inside the piston so that a voltage is generated by a pressure generated during a compression stroke of the piston.

2 . The vehicle engine of claim 1 , wherein when the voltage is generated, the voltage generating member forms an electric field by a potential difference in the combustion chamber so that a repulsive force is generated among charged fuel particles injected from the injector.

3 . The vehicle engine of claim 1 , wherein the voltage generating member is made of a piezoelectric material.

4 . The vehicle engine of claim 1 , wherein the voltage generating member transmits a positive voltage to an upper inner surface of the combustion chamber provided at the cylinder head, and transmits a negative voltage to an inner wall of the combustion chamber and a top surface of the piston.

5 . The vehicle engine of claim 1 , wherein the voltage generating member is electrically connected to an external power supply provided at an outside of the cylinder block.

6 . The vehicle engine of claim 5 , wherein the external power supply, when a vehicle is off and/or an ignition is on, applies a predetermined voltage to the voltage generating member to excite and vibrate an ultrasonic wave generated from the voltage generating member.

7 . The vehicle engine of claim 6 , wherein the ultrasonic wave generated from the voltage member removes a carbon stack formed on the combustion chamber, the piston and the spark plug.

8 . The vehicle engine of claim 1 , wherein a bowl is provided at the top surface of the piston and causes the fuel injected from the injector to swirl-flow.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Eom Tae Kwang

Classifications

• F02M27/08

  by sonic or ultrasonic waves · CPC title

• F02B77/04

  Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines · CPC title

• F02F3/00

  Pistons · CPC title

• F02B27/001 Primary

  the system having electrically controlled acoustic pulse generating devices, e.g. loudspeakers · CPC title

• F02M2027/047

  with a pulsating magnetic field · CPC title