Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Tech Briefs

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Prodrive plus Tickford

Prodrive, a motorsports and automotive technology group, has acquired Tickford, a British automotive engineering specialist company. Tickford's particular expertise and experience covers engine development and testing, alternative fuels, and the design and manufacture of limited-edition performance vehicles for major manufacturers. Its operations will become part of Prodrive's Automotive Technology Division. The acquisition includes Tickford's share in three joint ventures in the U.S. and Australia. Tickford Vehicle Engineering in Australia is a joint venture with Ford. The combined companies will have a workforce of about 900.

Prodrive has recently launched a new simulation system, which allows chassis and powertrain engineers to "drive" designs. It was developed with a simulation software specialist with particular focus on making it both as realistic and as flexible as possible. Instead of using expensive prototype vehicles, a virtual reality system allows engineers to carry out significant dynamics development on screen.

- Stuart Birch


Delphi saves fuel

Improving fuel consumption is a constant target for automotive companies, and stop-start systems that operate when a vehicle is temporarily stationary—such as when in heavy traffic—are of increasing interest. In Europe, Delphi has developed Energen 5 to meet this need. Designed particularly to operate in conjunction with engine capacities popular in Europe (it is expected to be fitted to a European production car in 2003), it uses a combined single unit starter/alternator in the conventional generator position.

According to Delphi, compared to conventional inline stop-start systems, Energen 5 is quieter, lighter, has fewer components, and requires almost no additional packaging volume. Dr. Jean Botti, Director of Delphi Energy and Chassis Systems' Customer Solutions Center, said the system has demonstrated a 5% fuel economy improvement and expects this to be "significantly" increased in the future. Energen 5 is suitable for gasoline engines up to 1.6 L and diesels up to 1.2 L. Elimination of the starter motor and ring gear cuts weight and cost, and startup noise is down by 3 dB.

- Stuart Birch


Hella flexible about lighting

Lighting systems developments are giving automotive designers increasing flexibility to integrate fresh thinking when styling new cars. Now, European lighting specialist Hella has come up with a modular lighting system called MOLIS (MOdular LIghting System), which, it claims, is the first in the world to realize lighting function through system components that can be freely combined. Development has been completed and it is ready for production, according to the company.


Hella claims MOLIS offers lighting functions through system components that can be freely combined.

Each individual system component basically forms a complete lamp in miniature format. Each of these "mini-lamps" has an LED light source. Special geometric structures take over the functions of the reflector and the visually effective patterned lens, and produce the desired light distribution. The choice of the LEDs used, together with the number of system components within the lamp, determines the luminous intensity. Their special shape means that these components can be combined smoothly together. Lighting strips of different lengths or contours plus large differently shaped surfaces can be designed homogeneously.

Particularly significant for manufacturing is that MOLIS combination rear lamps, with a depth of only about 20 mm (0.8 in), do not necessitate openings to be made in the bodyshell. A crimp and small recess for the cable bushing are sufficient. The MOLIS system uses fewer LEDs than comparable lamps with no loss of luminous intensity, claims the company. Light from the LED is introduced into the element in a "coupling-in area" and deflected toward the rear surface of the element where micro lenses again deflect the light source in the required beam direction. Conventional 3-mm (0.12-in) LEDs or stronger Piranha LEDs can be used, notably for brake and turn signal lights. Hella said the system is series-production ready.

- Stuart Birch


More 1 2 3 4

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.