Thursday, 15 November 2012

Auto Repair Tips

Brake

Power Brakes and master cylinders.

Power brakes (also known as power assisted brakes) are designed to use the power of the engine and/or battery to enhance your braking power. Whilst you can generate a fair amount of force using your foot, using systems from elsewhere in the car to help you apply even more force means that you get more powerful brakes as a result.
The four most common types of power brakes are: vacuum suspended; air suspended; hydraulic booster, and electrohydraulic booster. Most cars use vacuum suspended units (vacuum boosters). In this type of system, when you press the brake pedal, the push rod to the master cylinder opens a vacuum control valve. This allows vacuum pressure (normally from the intake manifold) to "suck" on a diaphragm inside the vacuum assist unit. This extra vacuum suction helps you to produce more force at the pedal end of the brake system.

Hydraulic booster systems usually utilise pressure from the power steering system to augment pressure on the master brake cylinder.

Electrohydraulic booster systems use an electric motor to pressurize the hydraulic system downwind of the brake pedal which has the effect of amplifying the internal pressure in the whole system.The advantage to this system is that as long as you have battery power, you have power brakes even if the engine fails. With vacuum-assist brakes, no engine means no assistance.

If you're curious about how power brakes work, go out to your car and with the engine off, step on the brakes. They'll have a slightly solid, almost wooden feel to them. Turn the engine on and do it again and you'll notice a lot less back-pressure on the pedal. This is the power assist which is making it easier for you to depress the pedal.

The components of a master cylinder

Shell Sell 30% Share of OML 30 to Shoreline Natural Resources Ltd

Shell Sell 30% Share of OML 30 to Shoreline Natural Resources Ltd

 

Shell’s unit in Nigeria, Shell Petroleum Development Co. (SPDC), has closed its eighth sale in Nigeria of its Niger Delta assets. The company completed the assignment of its 30% interest in OML 30 to Shoreline Natural Resources Ltd.. Total cash proceeds for Shell amount to some $567 million.

This divestment is part of SPDC’s onshore portfolio and is in line with Nigerian government’s aim of developing indigenous companies in the country’s upstream oil and gas business.

OML 30 covers an area of some 1,097 sq km and includes the Kokori, Afiesere, Oweh, Olomore, Eriemu, Evwreni, Oroni and Isioka fields and related facilities. The divested infrastructure includes most of the Trans Forcados major crude oil pipeline from OML 30 to the Forcados River manifold. The remaining 8 km to the Forcados terminal will remain with the SPDC JV. The divested fields produced around 35,000 bpd of oil and condensate.




Total E&P Nigeria (10%) and Nigerian Agip Oil Co. (5%) have also assigned their interests in the lease, ultimately giving Shoreline a 45% interest.

SPDC is the operator of a JV between NNPC (55%), Shell (30%), Total E&P Nigeria (10%) and Nigerian Agip Oil Co. (5%).

Shoreline Natural Resources Ltd. is a Nigerian JV company between Shoreline Power Company Ltd. and Heritage Oil Plc.


Source: petroleumafrica

Automaster Nigeria: FOMULAR 1 DRIVER STANDINGS 2012

Automaster Nigeria: FOMULAR 1 DRIVER STANDINGS 2012: Formula 1 Driver Standings 2012 Pos Driver Aus Mal Chi Bah Spa Mon Can Spa GB Ger Hun Bel Ita Sin Jap Kor Ind Uae Usa Bra Total 1 Se...

FOMULAR 1 DRIVER STANDINGS 2012

Formula 1 Driver Standings 2012

PosDriverAusMalChiBahSpaMonCanSpaGBGerHunBelItaSinJapKorIndUaeUsaBraTotal
1Sebastian Vettel (Red Bull) 18010258121201510121802525252515255
2Fernando Alonso (Ferrari) 10252618151025182510015150151818245
3Kimi Räikkönen (Lotus) 61001815241810151815108810625198
4Mark Webber (Red Bull) 121212120256122544800218150167
5Lewis Hamilton (McLaren) 151515441025040250250101120165
6Jenson Button (McLaren) 25018020041188250181201012153
7Felipe Massa (Ferrari) 0002081012021012418128695
8Nico Rosberg (Mercedes) 002510618880110610000093
9Romain Grosjean (Lotus) 008151201808015006062090
10Sergio Pérez (Sauber) 41800001520800181000066
11Kamui Kobayashi (Sauber) 80101002001200201500858
12Nico Hülkenberg (Force India) 0200140100201200684049
13Paul Di Resta (Force India) 160806060001412000246
14Pastor Maldonado (Williams) 0040250000000004001043
15Michael Schumacher (Mercedes) 010100015660680000043
16Bruno Senna (Williams) 08600101206010001430
17Jean-Éric Vergne (Toro Rosso) 04000000000400040012
18Daniel Ricciardo (Toro Rosso) 20000000000202120110
19Charles Pic (Marussia) 0000000000000000000
20Timo Glock (Marussia) 0000000000000000000
21Jerome d'Ambrosio () 0000000000000000000
22Narain Karthikeyan (Hispania) 0000000000000000000
23Heikki Kovalainen (Caterham) 0000000000000000000
24Pedro de la Rosa (Hispania) 0000000000000000000
25Vitaly Petrov (Caterham) 0000000000000000000

FOMULAR1 STANDING

Formula 1 Standings

F1 RACE LIST

LATEST RACE

Latest Races

Sunday November 4

Kimi RäikkönenLotus1:45:58.667
Fernando AlonsoFerrari+ 0.852
Sebastian VettelRed Bull+ 4.163
Abu Dhabi Grand Prix

Sunday October 28

Sebastian VettelRed Bull1:31:10.744
Fernando AlonsoFerrari+ 9.437
Mark WebberRed Bull+ 13.217
Indian Grand Prix

NEXT RACE - United States Grand Prix

03:00 pmFree Practice 1
07:00 pmFree Practice 2
Friday November 16
03:00 pmFree Practice 3
06:00 pmQualifying
Saturday November 17
07:00 pmRace
Sunday November 18

..Formula 1 - Formula One’s $300m American Dream

Related Content

The plans to build the first purpose-built F1 track in the US were originally dreamt up by entrepreneur Tavo Hellmund and in 2010, long before construction work had begun, he signed a deal for it to host a Grand Prix. Two years later the 3.4 mile Circuit of the Americas is finally ready to host its first race. It is a bold gamble as estimates have put its construction cost at between $250m and $450m. So how much did it really cost to build?
There is no such thing as hosting a Grand Prix on the cheap but the quickest way to pull it off is certainly to run a street race. These tend to be located on roads in cities or on the outskirts of town whilst permanent circuits are purpose-built venues designed specifically to host high level motor races.
Street races are cheaper to get off the ground than those on purpose-built tracks since they don’t require construction of a new venue. However, the annual running costs of a street race are greater than those of one on a permanent circuit. This is because grandstands need to be built then taken down and the roads need to be upgraded to F1’s high safety standard which is known as Grade 1 homologation and is set by its governing body the Fédération Internationale de l’Automobile (FIA).
An alternative is hosting a race in an permanent facility and this is where things get expensive. There are two possibilities here. The first is using an existing circuit but this means that the promoter has to settle for whatever flaws it comes with and unless it has been designed with F1 in mind it could also require significant conversion costs to ensure that it is up to Grade 1 homologation. This alone can run into hundreds of millions of dollars.
In contrast, designing a circuit from scratch gives the promoter complete creative flexibility which can make all the difference when it comes to attracting interest in the race. This was the precise reasoning behind the creation of Circuit of the Americas.  Several of its corners were modelled on the most exciting ones of other circuits and its site was deliberately chosen to give the track an elevation change of 133 feet. In common with three other beloved F1 races – Singapore, Abu Dhabi and Brazil - it will also run in an anticlockwise direction.
Circuit of the Americas has spent a long time securing enough funding to ensure that the end product lives up to expectations. It began in March 2011 when Austin Formula 1 Racing and Entertainment, a company connected to the circuit, raised $12.5m from 10 investors. Then, earlier this year, a further 24 investors invested $106m into COTA Racing & Entertainment, another company in the group. This was followed by a $90m loan provided in February by 17 lenders to the track’s parent company Circuit of the Americas LLC.
All in all, this yielded just over $200m and although the names of all the investors have not been revealed, some have been released such as John Paul DeJoria, a key investor in the high-end tequila company, Patrón Spirits. The names of the lead backers, who have also put money into the project, have been in the public domain since the race was first announced.
First up is Bobby Epstein, founder of Prophet Capital Management, an Austin-based hedge fund. He is joined by billionaire Billy Joe ‘Red’ McCombs, co-founder of advertising company Clear Channel. They have estimated that the cost of the first phase of construction is around $300m. So where did it go?
“It is very simple to calculate the total cost since so many of the permanent components needed to build a Grand Prix circuit are standard and only vary modestly from country to country,” says a source close to the situation.
Before construction could even begin, the 1000-acre site needed to be prepared and this was far from straightforward. Several underground gas pipelines needed to be relocated first but then came the big challenge. Beneath the surface of the site was a layer of black clay soil which needed to be stabilised because it expands and contracts significantly depending on moisture levels. This had not been a problem until then because the site was largely scrub land. However it needed to be resolved in order to build a track there.
Tilke, the German circuit architecture firm, came to the rescue and recommended digging a foundation down to nine feet which is deeper than usual. Around 4 million cubic yards of earth were moved for the project which is roughly enough to fill up the Empire State Building three times.
The source says that earthworks and infrastructure including water, waste water and electric costs come to between $40m and $50m (see box). The track itself including safety fencing, run-off, drainage and special asphalt is between $50m and $75m according to the source. Next up is construction of the grandstands, which is between $25m and $30m, with the pit building and Paddock Club costing another $50m. The source says that team buildings cost $15m which is the same amount as needs to be spent on the media centre. The final essential structure is the medical centre which comes to between $3m and $5m.
Drilling right down into the fine detail of the costs, the source says that special electronics, including timing, scoring, video, surveillance and specific F1 software, had a price tag of $25m to $30m.
“This could come to as much as $270m and that’s excluding the cost of buying the land,” says the source adding “the people in Texas are building everything for multi purpose use, so that too will increase the costs.”
The second phase of construction includes an open-air amphitheatre which will open in early 2013 and the source concludes that “I seriously doubt they will be able to keep it under $300m.” If the race is a success, the investors stand a chance of making back almost all this money.
The Texas state has committed to paying the organisers up to $25m in each of the ten years that the race is scheduled to take place. The size of the payout depends on the economic impact of the race and thereby the amount of money it generates in tax receipts. At least two studies analysing the economic impact will be done after the race by an F1 agency and one commissioned by Austin’s Circuit Events Local Organizing Committee. If the investors manage to recoup their investment through the success of the race then their gamble will indeed have paid off. The race is most certainly on.
BOX: The cost of building Circuit of the Americas
Earthworks and infrastructure: $40m - $50m
Track:$50m - $75m
Grandstand:  $25m - $30m
Pit Building/Paddock Club: $40m - $50m
Team buildings: $15m
Media centre: $15m
Medical centre:  $3m - $5m
Special Electronics: $25m - $30m
TOTAL: $213m - $270m
Christian Sylt is author of Formula Money