So how many different radiator models does a global car company need? Clearly it needs enough to accommodate different sized engines and cars. A big pick up with an over-sized cylinder eight-engine is going to need something different from a subcompact with an under-sized four-cylinder engine. But does that translate to twenty-something radiator designs or ninety-something?
Bloomberg reports Toyota has been thinking about this question for radiators and other car parts (Toyota Airbag Cuts Create Opening for Overseas Suppliers, Jun 10).
In one of President Akio Toyoda’s biggest initiatives since taking over in 2009, the carmaker is winnowing the number of parts it uses and increasing common components across models. The plan will cut both the time and cost for creating new models by as much as 30 percent, according to estimates from Toyota. …
In the past, Toyota focused on developing custom parts. It needed 50 types of knee-level airbags because seats for various models had different profiles. By standardizing “hip heights,” as the automaker calls it, across models, Toyota says it can reduce knee airbag variants by 80 percent.
As of last year, the automaker had slashed radiators to 21 models from about 100, according to Shinichi Sasaki, Toyota’s global purchasing chief. And the company is reducing the number of cylinder sizes in its engines to six from more than 18 by 2016, the Nikkan Kogyo newspaper reported June 4. Toyota declined to comment on the report.
“From now on, Toyota will seek the compatibility of certain parts it uses with standard parts used by many automakers globally,” the company said in a statement outlining its Toyota New Global Architecture, or TNGA, in March.
Some of the anticipated benefits here are fairly obvious. For example, the article mentions that standardizing parts like radiators that customers don’t care much about (beyond knowing that the car has one) will free up engineering time to work on body or cockpit design that customers do care about. Similarly, many of the implementation challenges (such as standardizing hip height) are fairly clear. Customers may not care about knee-level airbags per se, but standardizing those means standardizing some aspect of the interior design. Customer may or may not notice.
The most interesting part of this to me is its implications for supply chain risk. (more…)