法人別リリース

World's First, Epoch-making 4-in-1 Engine Successful in Prototype Test Run

Namikoshi Electronics — Wed, 19 Apr 2017 14:00:15 +0900

NISHINOMIYA, Japan, Apr. 19, 2017 /Kyodo JBN/ --
Namikoshi Electronics Corporation
World's First, Epoch-making 4-in-1 Engine Successful in Prototype Test Run
- Internationally Patented with Promise of New Technology -

Namikoshi Electronics Corporation of Japan has successfully conducted a test run of its 4-in-1 engine, which has been developed with the help of experts at Osaka University and Kobe City College of Technology. The company, based in Nishinomiya, Hyogo Prefecture, has also announced this achievement at an academic conference.

(Photo1: http://prw.kyodonews.jp/opn/release/201704140943/?images)
(Photo2: http://prw.kyodonews.jp/prwfile/release/M102753/201704140943/_prw_PI5fl_h1oQ9a2Q.png)
(Video: https://youtu.be/CjmpDht9qRU)

What is a 4-in-1 engine?
It has a significantly different structure from conventional engines with the aim of achieving low fuel consumption and high output. This engine is intended for use in motor vehicles, drones and range extenders for electric cars as well as generators powered by natural gas and biogas. It is suitable for use in situations where high-performance engines are needed.

Characteristics of the 4-in-1 engine:
The 4-in-1 engine comprises four cylinders arranged horizontally and four pistons incorporated as one. It aims to improve output and save fuel consumption by minimizing vibration (as well as vibration loss) and friction loss.
Low vibration and a reduction of more than 30% in fuel consumption have been confirmed in the prototype test run. By achieving a perfect dynamic balance and a perfect static balance, the 4-in-1 engine rotates smoothly with extremely limited vibration.
With fewer friction points than conventional engines, the 4-in-1 engine is very nimble. There is no side thrust resulting in piston friction with the cylinder wall or causing unpleasant vibration.
In appearance, the pistons are moving back and forth. But physically they move in a way similar to a rotary motion and do not cause unnecessary vibration to the crankshaft. Moreover, power is directly transmitted to one piston from another, causing no waste of energy.
Still at the prototype stage, this engine will eventually be mounted on cars, making it much more fun to drive.

About Namikoshi Electronics Corporation
A venture-minded company founded in 1990, it has made many inventions and worked in wind-power generation, photovoltaic power generation, solar car development and other areas. The 4-in-1 engine has been developed over a span of 25 years.
Headquarters: Nishinomiya, Hyogo Prefecture
President: Hiromichi Namikoshi

Namikoshi Electronics Starts Development of Revolutionary "4-in-1-piston" Engine

Namikoshi Electronics — Fri, 17 Oct 2014 14:00:14 +0900

NISHINOMIYA, Japan, Oct. 15 /Kyodo JBN/ --
Namikoshi Electronics
Namikoshi Electronics Starts Development of Revolutionary "4-in-1-piston" Engine
- New Engine to Give New Impetus to Automotive Industry -

Namikoshi Electronics has started the development of a new engine with an innovative structure.

This engine was created for the generation of electrical energy, but we realized that it could also be used in automobiles. In light of rising fuel prices, the applications of this engine to motor vehicles would rival hybrid car engines in terms of efficiency.
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This engine's structure significantly reduces friction and vibrations which typically hinder power generation. Therefore, even in the case of equal fuel consumption, power will be increased compared to conventional engines.

Presentation of the product
http://www.namikoshi.co.jp/product/engine.html
http://www.youtube.com/watch?v=dl_eP3c4gD8 (YouTube)

Features
1. Reduced friction
This feature is achieved because of fewer friction parts.
Ball bearings can be used. With ball bearings, friction can be further reduced.

2. Reduced vibrations
Thanks to the coherent rotation between dynamic balance and static balance, vibrations are highly improved.
Balance consistency makes vibration similar to the rotary engine's.

3. Removal of round-trip kinetic energy generated by reciprocating motion
Pistons' reciprocating motion generates round trip kinetic energy between the crankshafts.
In this engine's structure, the pistons' kinetic energy directly offsets the balancer's. Therefore, kinetic energy does not go through piston pins or crank pins.
As kinetic energy does not go through pins, there is no energy loss due to friction.

4. Expansive power is transmitted from one piston to another, reducing the loss of energy.
All four pistons are connected and incorporated as one. Expansive power is directly transmitted from one piston to the other three, reducing energy loss. In conventional structures, much energy is wasted as expansive power is transmitted through numerous mechanical linkages.

5. Features of the engine
Weight:Approx 90 kg. (machinery accessories are not included)
Measurements:Approx 800 mm (W) x 500 mm (D) x 250mm (H)
Cubic capacity:Approx 1.500 cc.
Bore:62 mm
Stroke:125 mm
Structure:Flat-four engine, with four pistons integrated as one. It moves simultaneously back and forth.
Patents: Obtained in Japan, U.S.A and China

About Namikoshi Electronics
President: Hiromichi Namikoshi
Headquarters: 1-27-9 Kitarokkoudai, Nishinomiya City, Hyogo Prefecture, 651-1413 Japan

Source: Namikoshi Electronics