Showing posts with label Parts. Show all posts
Showing posts with label Parts. Show all posts

Friday, March 18, 2011

Japan car makers seek parts suppliers after quake

TOKYO – Japan's major automakers are trying to find alternative parts suppliers to replace those knocked out of action by the colossal earthquake last week that has forced most of the country's car production to a halt.

Analysts say production is likely to resume within the next few weeks, bouncing back from the Mar. 11 quake and tsunami which killed more than 6,000 people. Once parts are coming, automakers will be able to make up for much of the lost production in coming months, they say.

What's likely to hurt in the longer run are logistical difficulties caused by destroyed roads, and limits on electricity use. Power stations have suffered damage including several nuclear power reactors that are beyond recovery — and leaking radiation in a still unfolding crisis. The yen's recent surge to record highs could also hamper automakers.

Toyota Motor Corp., maker of the Prius hybrid and Lexus luxury models, has stopped production at auto assembly plants throughout Japan through next Tuesday.

Among Japan's automakers, it will likely be least affected because most of its suppliers are located near the company's Nagoya headquarters, southwest of Tokyo, which is far from the disaster's epicenter in the northeast.

Honda Motor Co. said its production halt at auto assembly plants in Japan will be extended by three days until March 23.

Earlier this week, Nissan Motor Co. and Mitsubishi Motors Corp. restarted some plants using their stocks of parts, which will continue only as long as inventory lasts.

"It's all guesswork," Koji Endo, analyst with Advanced Research Japan, said of the potential damage.

Automakers are scrambling to find other suppliers, including overseas ones, to replace those disabled by the 9.0-magnitude quake, he said.

Northeastern Japan is home mostly to tertiary parts-makers — the tiny machine shops that make parts for secondary and other suppliers. Parts-makers higher up in the supply chain will be able to make those parts instead, Endo said.

He estimates the loss for Toyota at about 6.5 billion yen ($81 million) or 13,000 vehicles at day, but Toyota can make up for that by boosting production later on.

Goldman Sachs said in a report this week that the damage to automakers will be short term, and parts-makers have recovered quickly from previous earthquakes.

Nissan's engine plant in northeastern Japan suffered damage, and a transmission plant was damaged from another quake Tuesday in Shizuoka, southwest of Tokyo.

That could prove more serious as suppliers for engines and transmissions are harder to replace. Spokesman Mitsuru Yonekawa said damage was being assessed and it was unclear when production will resume.

Nissan said Friday that checks began this week for traces of radioactive material in vehicles to avoid spreading contamination.

Fears about radiation leaks have been growing because of the crisis at the Fukushima Dai-ichi nuclear power plant, which is spreading low levels of radiation in northeastern Japan, forcing nearby areas to be evacuated amid efforts to cool overheating nuclear reactors.

Toyota said it may decide next week's plans by later Friday. It began production for repair and replacement parts Thursday, and plans to start production of parts for overseas production, including knockdown car assembly, Monday.


View the original article here

Saturday, February 26, 2011

Hybrid Electric Vehicle - Down to the Parts


With all the great news from the auto industry introducing another hybrid vehicle or another electric vehicle, this article explores a bit what such vehicles are made of. What are the differences with the conventional petrol car and what might the future hold for them?

The first difference you see these days is that both the electric vehicle and the hybrid vehicle come with a plug to charge it at home; the conventional vehicle has not. The conventional vehicle also has no electric engine to power the wheels or a large battery to power this engine. The conventional car of course does have a battery, but that is just used for starting the internal combustion engine and it acts as a buffer for the electrical systems used. Power in the conventional vehicle is generated by the combustion engine.

For an electric vehicle, there are two main components: the electric motor and the battery. The electric motor is the one to power the wheels of the vehicle and the battery is used to bring along energy for the trip. They almost all have the option of regenerative braking, which allows one to recover energy when slowing down and charging the battery a little while doing so. This is a great method to increase the overall efficiency for a vehicle! Further more there is often a special battery management system (BMS) which ensures the battery is kept at the right temperature and is not charged or discharged in a way that can damage the battery.

For a hybrid vehicle there are a few more main components: besides the electric motor and the battery, there is also an onboard power source like the conventional combustion engine (but also a fuel cell is used for example). Additionally, there is a system that somehow connects the power from the battery and the for example combustion engine and gets it to the wheels. There are many ways to do this last step, the simplest being that the combustion engine would be used as a generator to power the electric motor with electricity. Excess electricity is stored in the battery for future use. Another method is to have a special gear set combine the mechanical power from the combustion engine and the electric engine and get them to the wheels. There are also manufacturers who power one set of wheels with the combustion engine and the other set of wheels with the electric engine. A big advantage of the hybrid vehicle is that it can use the very efficient electric engine at lower speeds (for example urban areas) and the combustion engine for extra power on the highways or for extra range.

To sum it up, an electric vehicle consists of:

- Electric Engine

- Battery

A hybrid vehicle consists of:

- Electric Engine

- Battery

- Energy source (internal combustion engine, fuel cell, etc)

The disadvantages of the electric vehicle and the hybrid are mostly the cost. Compared to the conventional car they can cost more to purchase. This has two main reasons; the first being that the conventional car is mass-manufactured which makes it cheaper (compare one million units produces versus one thousand units produced) and the second is the current price of batteries. Batteries at the moment are the biggest cost within the vehicle, the larger your battery is, the larger the cost is in the total price of the vehicle.

Another disadvantage which currently mostly applies to the electric vehicle, is the range it can cover. Current vehicles are of such a weight and their batteries can only hold a certain amount of power. Comparing the electric vehicle to a conventional petrol car they can cover a lot less ground on a full charge or tank. The first argument to counter this disadvantage is that most people do not drive distances that can not be covered by an electric vehicle. Current electric vehicles can cover about double or four times the daily distance required by many people! However, there are three movements currently helping to overcome the range anxiety problem. The first is the battery manufacturer, which improves the technology so that the battery will weigh less and can contain more power. The second is the charging industry, where solutions are found in fast charging. Conventional charging can take up to eight hours to charge your vehicle. The goal is to reduce this to an acceptable amount of mere minutes. The third force is heading for battery swapping; much like a petrol station, an electric vehicle can swap the empty battery for a fully charged one.

For the future of the electric vehicle and the hybrid there are many options, the most popular ones are:

- Fuel Cells

- Fast Charging of batteries

- Better batteries that weigh less and hold more power

- Battery swapping stations

- New car design options

Lots to expect from the electric vehicle and the hybrid vehicle!








Roelof Reineman is an expert on (hybrid) electric vehicles and is updating a blog regularly on the various topics involved with electric transport. It all started with his thesis for Control Systems Engineering, where he studied Energy Management Strategies for a Fuel Cell Hybrid Truck (The Hytruck).

For more information, refer to other articles on the blog; http://www.myhev.com.