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- Diesel generator
- RV Smackdown – Diesel vs Gas
- M1064 Series Generators
- Medium-speed power systems solutions
- GENERATOR FUEL - WHAT GENERATOR FUEL IS BEST?
- 32 Common Red Diesel Fuel Questions & Answers
- Are diesel’s days numbered? A view from a trip to BYD’s electric bus factory
- Diesel farms make fresh bids to supply National Grid back-up power
- Kohler Marine Generator For Sale
- Cummins Warehouse
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In recent years it would seem that most technology advances have taken place on two-stroke engines. In part this is due to the fact that marine two-strokes are very specialised engines with few if any counterparts in other industries and rapid change has been needed to ensure that the most popular engine type for medium to large vessels can remain viable in an increasingly regulated environment.
With at least 25 different manufacturers plus a number of licensees, the four-stroke market is much more competitive than the two-stroke market. That could make survival for some makers difficult, but four-stroke engines are also used much more extensively for non-marine applications. The same engine that is used in a marinised version on a ship or smaller vessel might be found in a power station, for powering a train or industrial plant, on a truck or bus and many more applications beside.
That diversity helps in engine development and it is often in the four-stroke sector that innovations such as electronic valve timing, common rail, Miller timing and variable and two-stage turbocharging take place.
Usually those developments migrate into the marine sector from land-based uses. In terms of vessel numbers, four-stroke engines are much more prominent than two-strokes, but the ships concerned are, with a few notable exceptions such as multi-engined cruise ships, much smaller and include craft such as tugs, workboats and similar.
Four-strokes are higher speed engines encompassing both the medium- and high-speed types and as such are not suited to being directly connected to the propeller so require a gearbox, thus complicating the power transmission. Alternatively, the engines can be linked to generators providing their power through electric rather than mechanical means.
They are frequently installed in multiples on a ship in both configurations although in many ships, a single four-stroke will be the main engine.
Because of the more situations that four-strokes are employed in, the number of the various models produced is generally higher than for two-strokes. This can mean faster development and series production of the engines.
Four-strokes also provide the majority of dual-fuel engine types having been the first types to offer this additional flexibility. In smaller ships, the use of HFO is less common, mostly because of the need for separate tanks for different fuel types and for the extra fuel treatment needed for HFO. Adding LNG as a fuel type obviously requires even more additional equipment for fuel storage and handling. With the MARPOL global sulphur cap now imminent, compliance among ships with four-stroke engines may present less of an expense since many such ships already run on the more expensive distillate fuels.
Where the normal choice would once have been mechanical drive or diesel-electric, today many more hybrid drive systems are being used and experimented with. There are for example combined diesel and diesel-electric drives, combined diesel and gas turbine drives, permanent magnet drives and systems that store excess power in batteries for use when power demand increases.
Power take-in and power take-out systems are most often built around a medium-speed diesel. Generally speaking, it is accepted that four-strokes as a type are marginally less efficient than two-strokes. They also tend to be squarer with bore and stroke much closer in dimension than the two-strokes where long and ultra-long strokes are the norm. Four-strokes for propulsion purposes come in many sizes with the larger bore sizes from mm and up generally revving slower at up to rpm than the smaller sizes, which have speeds between 1,rpm and 3,rpm.
The high revolutions of four-stroke engines mean they are too fast for direct mechanical drive and so will require a gearbox for mechanical drive or must be connected to a generator in a diesel-electric set-up. Although the large-bore four-strokes may come in six-cylinder in-line variants that mirror typical two-stroke configurations, most have many more cylinders and vee models to give more power output but with only a small additional length.
The same range has , , and cylinder vee variants with power outputs of 14,kW through to 21,kW. The length difference between the in-line and their respective vee versions is in the region of 1. With the notable exception of a small number of twin-propeller tankers and container vessels, most two-stroke engines are installed as the sole prime mover on the vessel.
By contrast, on ships with highly variable power demands, such as a cruise ship or offshore vessel, it would be quite common to find four, six or occasionally more four-stroke engines installed.
Because all engines have an optimum load at which they operate most efficiently, operating below this will increase fuel consumption. In such cases, the power required will be provided by an appropriate number of engines operating at near to optimum speed with perhaps another engine operating at low load as a spinning reserve.
A multiple engine arrangement also means that failure of a single engine will rarely have disastrous consequences. The power arrangements on multiple-engined vessels will normally mean that engines of different outputs are available.
This can be achieved by having engines of the same type but with different cylinder numbers or larger bore engines supplemented by smaller bore types. The modular design of engines and common parts across a range mean that ships can benefit from carrying lower numbers of spares. Even when vessels are mechanically driven, often an owner will choose to have the same basic engine for propulsion and smaller version of the same type as a genset for electrical power.
Unlike the mechanical power that is delivered directly to a propeller or through a gearbox, electric power produced by four-stroke gensets needs to be managed to allow for safe and efficient distribution to all the consuming systems. Opting for a diesel-electric propulsion system does mean that electric motors must be used to power any propulsors. This has advantages and disadvantages. Unlike the mechanical drive systems, the cables from the electric distribution system to the electric motors can be routed in any direction without any problems and with far less space needed than for mechanical drives.
This can allow engines and motors to be isolated from each other and permit power to be generated from any genset on the ship. The most obvious disadvantages are that electric motors are not cheap and when installed they are an additional point of potential failure. Recent developments in electric distribution have focussed on the benefits of direct current DC rather than alternating current AC systems. Another major advantage of diesel-electric is the potential for integration of energy storage sources such as batteries.
The energy storage sources reduce the transient loads on the diesel engines and give much better system dynamic response times. Also, emission-free propulsion can be realised when running on batteries especially when they are topped up using energy from solar panels, recovered from waste heat onboard or even when charged in port using a local grid.
In such a competitive field, regular releases of new models are essential to keep pace although it can be two or three years following the launch of a new engine before orders begin to be placed. Most of the new engine types announced over the last five years have been models that are available in gas burning versions as well as oil burning. That is not seen as marking the end of oil-powered ships as the sales figures show that the majority of orders are for single fuel oil variants.
The bore sizes of the two engines placed them in one of the most competitive segments of the four-stroke market where they will be competing against models from MaK and MAN Energy Solutions. The latter version for marine used was announced only in The Rolls-Royce engine was described at the time as having world-class fuel efficiency and offering kW per cylinder in a compact engine design.
In response to customer enquiries, Rolls-Royce focused on five main areas when designing the engine — achieving the lowest fuel consumption and emissions; highest power per cylinder in this engine class; increased power within the same footprint, and potential for fewer cylinders with lower weight and cost; a compact modular design and a base engine suitable for liquid or gas fuel; and dynamic and extended service intervals.
In-line engines were the first to be produced, with 6, 7, 8 and 9 cylinders spanning a power range from 3,kW to 5,kW. Power and fuel consumption figures are much boasted about by manufacturers but there is often very little between the engines on paper and in practice the running parameters selected by the operators will likely affect the claimed figures to some extent. Most makers have opted for a modular design for new engines as a means of both reducing production costs and facilitating maintenance.
For example, the powerpack unit now consists of a connecting rod, piston, cylinder liner and cylinder head with related pipes combined in one single exchange unit. Standardisation also makes conversion of the engine from one version to another a simple matter of swapping components without the need for machining. It achieves this partly by running at rpm rather than the rpm of competing models. MAN Energy Solutions plans to introduce a dual-fuel version at a future date. Published every February the journal is now recognised as the highest quality publication that covers all aspects of maritime technology and regulation and a must read for the industry.
Skip navigation. Multiple engine systems With the notable exception of a small number of twin-propeller tankers and container vessels, most two-stroke engines are installed as the sole prime mover on the vessel. Diesel electric systems Unlike the mechanical power that is delivered directly to a propeller or through a gearbox, electric power produced by four-stroke gensets needs to be managed to allow for safe and efficient distribution to all the consuming systems.
Latest new models In such a competitive field, regular releases of new models are essential to keep pace although it can be two or three years following the launch of a new engine before orders begin to be placed. Related Articles. Updated 22 Oct Power and propulsion system regulation. Updated 22 Oct Diesel Engine Overview. Updated 22 Oct Two-Stroke Diesels. The Journal Published every February the journal is now recognised as the highest quality publication that covers all aspects of maritime technology and regulation and a must read for the industry.
RV Smackdown – Diesel vs Gas
This is a new pop-up window on top of your GeneratorJoe browser window. Diesel Fuel Use Chart Disadvantages: month shelf life, without additives Installing large storage tanks raises cost of system May not be available during power outages. Diesel fuel storage must be considered relative to required run time in your geographical area. If you live in hurricane country you might need a large fuel tank due to the high possibility of extended power outages Engine noise is higher on a diesel compared to a gaseous engine. Use of a properly designed enclosure and sound attenuation system is more critical on a diesel engine system.
M1064 Series Generators
In recent years it would seem that most technology advances have taken place on two-stroke engines. In part this is due to the fact that marine two-strokes are very specialised engines with few if any counterparts in other industries and rapid change has been needed to ensure that the most popular engine type for medium to large vessels can remain viable in an increasingly regulated environment. With at least 25 different manufacturers plus a number of licensees, the four-stroke market is much more competitive than the two-stroke market. That could make survival for some makers difficult, but four-stroke engines are also used much more extensively for non-marine applications. The same engine that is used in a marinised version on a ship or smaller vessel might be found in a power station, for powering a train or industrial plant, on a truck or bus and many more applications beside. That diversity helps in engine development and it is often in the four-stroke sector that innovations such as electronic valve timing, common rail, Miller timing and variable and two-stage turbocharging take place. Usually those developments migrate into the marine sector from land-based uses. In terms of vessel numbers, four-stroke engines are much more prominent than two-strokes, but the ships concerned are, with a few notable exceptions such as multi-engined cruise ships, much smaller and include craft such as tugs, workboats and similar.
Medium-speed power systems solutions
The NextGen 3. Different models available. Some think that the wear in an engine is in direct relationship with the travel of piston and other parts.
When it comes to UK power generation, Advanced are here to help as your single source power generation provider. No matter if you have years of experience, or are just getting started with electricity generation, we are here to support your every need and help you find the perfect generator for your home or business. From standby generators and electrical enclosures, to weather protective, reduced noise, sound attenuated generator enclosures, we can supply it all from under one roof! Our complete generator range starts as small as 2 kVA portable generators, and ranges all the way up to kVA high power industrial generators. We also offer an extensive range of home generators , suitable for all types of domestic use. Whether you need one of our smaller portable generators to power a few essential items, or a larger solution to provide backup power to your entire home, we have the solution to suit your every need. You may want your genset for primary power, standby power, or even to feed power back into the grid. Bespoke modifications can also be made to any of our generators. Such as upgrading the control panel, having IP rated sockets or additional sockets fitted, converting it from three phase to single phase, adding an extended base fuel tank or bund tray and more. You also may be thinking of synchronising with other gensets , or worrying about where you will house your fuel, or control the system.
GENERATOR FUEL - WHAT GENERATOR FUEL IS BEST?
Replacing that diesel-burning transit bus with an electric bus has some obvious benefits. Electric buses improve local air quality, because the particulates that come from burning diesel don't exist. BYD offered Ars a tour of its Lancaster facility in July, and we found a bustling factory floor filled with workers who were building, welding, shaping, and painting about 90 buses in various stages of completion. The company's workforce, recently unionized, is expected to grow to 1, in the near future. So far, BYD has put more than electric buses on US roads, and, as of mid-July, the company had more than orders in the pipeline. That's a significant number of buses in this nascent industry: last December, Reuters estimated that only public buses on US roads were electric.
32 Common Red Diesel Fuel Questions & Answers
Clean, efficient, dependable and durable, Cummins engines are found in nearly every type of vehicle and equipment on Earth, from pickup trucks to wheelers, berry pickers to ton mining haul trucks. You'll also find us everywhere there's water, with a full line of recreational and commercial marine diesels. The information you are looking for is on cummins. Breadcrumb Engines. Around 1 millio. Construction Your job site needs more power, less hassle. With ratings from h. Defense Cummins Inc. Large numbers of Cummins-powered units are curren. Drilling Cummins supplies reliable, durable, and efficient power for drilling.
Are diesel’s days numbered? A view from a trip to BYD’s electric bus factory
We sat down with the Fleetwood design and engineering team, chatted about our take on Gas vs. Disclaimer — These comparisons are generalized differences between these two specific RV models. This article and video are for entertainment purposes only, and even though we discussed these differences with the Fleetwood team we are solely responsible for this content. A big thanks to Fleetwood RV for making this article and video possible.
Diesel farms make fresh bids to supply National Grid back-up power
The National Grid needs back-up electricity sources that kick in when, for instance, demand is high but the weather is not breezy enough to power wind farms. This auction process has created lucrative investment opportunities for people to invest in diesel farms, rows of noisy and polluting generators that operate for up to 15 years.
Kohler Marine Generator For Sale
A diesel generator also known as diesel genset is the combination of a diesel engine with an electric generator often an alternator to generate electrical energy. This is a specific case of engine-generator. A diesel compression-ignition engine is usually designed to run on diesel fuel , but some types are adapted for other liquid fuels or natural gas.
The M Series marine generator sets are powered by Lugger diesels. It will run day and night, so smooth, quiet operation, long engine life, and fuel consumption are major considerations. With so much depending on your new set, it pays to choose one that is built up to a high standard of quality; not down to a low price.