New catalyst Toyota requires a 20% less precious metals


Lexus LC500h.

Toyota and Denso, a components company owned by Toyota, have jointly developed a new type of catalyst allows to reduce the volume in a 20 percent, in addition to also need to a 20-percent less precious metals. Even so, it maintains the same performance as a catalyst of the original size.

This is advertised as “the first catalyst of the world with the substrate of the flow cell is adjustable and molded entirely”, and sections of higher density of cells.

The first model that will incorporate this new system will be the new Lexus LC 500h, which will mount it this year.


Section of the grid inside.

The catalysts conventional to employ as the substrate more normal to the ceramic, which exhibit a structure in the shape of honeycomb, with cells square or hexagonal, provided with a uniform surface. In this case, the new substrate has been patented by Toyota presents a structure with a section area of the cells is different between the inner part and the outer part. Getting in addition to a manufacturing technique that allows shaping of the catalyst entirely.

The catalysts conventional, with its grid of cells uniform causes the flow rate of the gas is not balanced, flowing through the central area more quickly than on the outer edge. In the case of the catalyst with new design of Toyota, this has a flow more uniform exhaust gas, is achieved that the coating of precious metals and other catalyst materials to achieve purify best the exhaust gases, avoiding to have to have more amount of precious metals in the inner area.

By the time the brand name has only been mentioned a model that will incorporate in
brief this new design of catalyst, but it is understood that will be
extended to other models
of the japanese manufacturer.