Two Stroke Engines
New Norton Villiers two-stroke
NORTON VILLIERS – not to be confused with the reborn Norton bike brand – is set to reveal a new take on the two-stroke engine concept in the near future.
The firm claims to have developed a new motor that has all the two-stroke benefits of light weight and high power, but doesn't struggle to meet emissions laws.
Technical details are thin on the ground, but here's the firm's press release:
For the last 8 years, we at Norton Villiers, along with partners Villiers Engines and DMW, have been developing a completely new, innovative two stroke engine design.
Due to I.P. restrictions (Intellectual Property rights), the engine design is currently in the Patent process and thus I can only briefly give the principles of this exciting engine. Unlike its current 2-stroke engine predecessor that runs on a pre mix fuel (oil & petrol mix) our engine runs on PLAIN fuel with no additives. Diesel and Bio-fuel variants are also in development. This will enable Norton Villiers to re-create its industrial division to cater for the industry, construction, heavy haulage and the shipping industry.
Our engine is designed for the present and the future, so the components we have designed are the very latest in technological design. For instance, ceramic bearings, Teflon and other coated surface treatments not yet on the market. Components will be treated with an advanced formula that never needs lubrication. This advanced formula is currently being tried and tested with a number of leading car manufacturers and within the aircraft design industry.
The engine is super charged by a Norton Villiers system giving controlled, outstanding, advanced power output over any of its rival engines. This advanced system exerts little to no drag when the engine is not driving. The control of the engine is via the latest engine management system including a laser ignition system which is under test. The engine has a Norton Villiers unique variable scavenge system giving reduced emissions.
Our “FITS” engine will produce some 30+% more power output than its equivalent 4 stroke rival. This takes into account any engine drag caused by the engine components i.e. bearings, induction system, clutch, gearbox etc. Since the 2 stroke fires on every second stoke while the 4 stroke fires on every fourth stroke, it gives a significantly increased power output.
Two Stroke Engines - News
For the last 8 years, we at Norton Villiers, along with partners Villiers Engines and DMW, have been developing a completely new, innovative two stroke engine design. Due to IP restrictions (Intellectual Property rights), the engine design is currently
Also, the lower torque of the engine means you need to upsize your motor to handle loads and hole shot. To hit back, manufacturers developed DI two-stroke motors that pretty much answered the faults of four bangers. The new motors are light,
On a two-stroke engine, compression is increased by milling the head (which decreases combustion chamber volume). On a four-stroke, the compression ratio is increased by using a piston with a higher dome. A high-compression piston typically delivers
This can be done with a five-stroke engine. My five-stroke engine design encompasses two small high pressure combustion cylinders and one large expansion cylinder. Both combustion cylinders accomplish the common four strokes, but instead of exhausting
Add to this a grunty 150cc two stroke engine producing 8 Bhp, the LML Select II simply stood head and shoulders higher than the Bajaj Chetaks and the Priyas of this world. Yet, Lohia Machinery Limited, popularly known as LML and the Vespa brand simply
Two and Four Stroke Engines – Fast and Simple Answers « automotive ...
As Internet wasn’t available, and as I was worried about other aspects or motorcycle riding back then, I left that question unanswered for a long time.
If this is your case or if your are interested in these two kind of internal combustion engines, in the next few lines I hope to give you a few fast answers and some resources to get more in depth information.
Just keep reading…
Here are some facts about two and four stroke engines:
TWO STROKE ENGINES
Cycle – Two Strokes:
1.- Compression (intake+compression)
2.- Combustion (combustion+exhaust)
Advantages of two stroke engines:
o The engine fires – spark plug ignites – once every revolution of the crankshaft.
o They produce twice the power than four stroke engines.
o They are much simpler than four stroke engines. Fewer parts to worry about.
Disadvantages:
o You have to mix two stroke engine oil with gas, and depending on your consumption, this might be expensive.
o They last less. Lubrication is not as efficient as in a four stroke engine with heavy oil.
o Do not use gas efficiently.
o Pollute more.
FOUR STROKE ENGINES
Cycle – Four Strokes:
1.- Intake
2.- Compression
3.- Combustion
4.- Exhaust
Advantages of four stroke engines:
o Last longer than two stroke engines
o More efficient use of gas
o Pollute less than two stroke engines
Disadvantages:
o More complicated. Many more parts to worry about.
o Half as powerful as two stroke engines (for equivalent engines)
o Fires once every two revolutions.
If you want to learn more about two stroke and four stroke engines, take a look at the pages I mention above. You will find extensive information and diagrams that will solve all of your doubts.
Well I hope this gave you some basic information and helped you answer some FAQ about two and four stroke engines!
Enjoy the ride!
How two-stroke engines work. 
Two-Stroke Engine Repair
How Two-stroke Engines Work
How two-stroke engines work.
How two-stroke engines work. Two Stroke Engines - Bookshelf
Two-stroke engines, technology and emissions
Two-Stroke Engine Repair and Maintenance
Packed with photographs, this is a step-by-step, how-to guide for troubleshooting, repairing, and maintaining two-stroke engines--the types that power tens of ...Two-stroke engines, theoretical and experimental investigations
A New generation of two-stroke engines for the future?, proceedings of the international seminar held in Rueil-Malmaison, France, November 29-30, 1993
First of all, it is necessary to make an attempt of definition of this "new generation" of two-stroke engines. Conventional existing two-stroke engines are ...Two-stroke engines
Day-to-day Guide Directory
Two-stroke engine - Wikipedia, the free encyclopedia
Brons two-stroke V8 Diesel engine driving a Heemaf generator. ... In this way, two-stroke engines often provide high specific power, at least in a narrow range of rotational ...
Animated Engines, Two Stroke
Two Stroke Engine. The two stroke engine employs both the crankcase and the cylinder to achieve all the elements of the Otto cycle in only two strokes of the piston. ...
Two-stroke diesel engine - Wikipedia, the free encyclopedia
A two stroke diesel is a diesel engine that works in two strokes. ... Two stroke internal combustion engines are more simple mechanically than four stroke engines, yet are more ...
HowStuffWorks "How Two-stroke Engines Work"
A car engine uses a four-stroke cycle -- how can two strokes accomplish the same tasks? Learn all about the two-stroke engine, where it's used and ...
Animated Engines, Diesel
Animated illustration and description of the diesel engine. ... Near the top of the compression stroke, the fuel injector drives fuel into the cylinder. ...
