DENSO Corporation and Toyota jointly developed the new 1,800-bar diesel common rail system with newly-developed piezo injectors, currently installed on the Toyota Avensis, available in Europe starting last month (May). (Earlier post.)
The 1,800-bar common rail diesel system performs up to five high-accuracy injections during each combustion stroke. The new system uses the highly responsive piezo injectors to attain a shorter injection duration and deliver a finer fuel atomization spray, resulting in improved combustion performance.
As a result, the system helps generate higher engine power while reducing emissions. Compared to a solenoid injector, this piezo injector, with its DENSO-developed piezo element, reduces the minimum injection interval from 0.4 milliseconds to 0.1 millisecond.
DENSO also supplies a filter (cordierite DPF material) and an exhaust fuel addition injector that injects fuel into the exhaust pipe to burn PM collected in the filter. Both products are installed in the DPNR (Diesel Particulate NOx Reduction) system, which purifies exhaust gas, of the Toyota Avensis.