The Story of Sakichi Toyoda
Sakichi Toyoda, the founder of Toyota Industries Corporation, possessed a strong ambition to contribute to society from his days as a youth. He had devoted his 63-year-long life to invention.
|Cylinder Arrangement||Inline type 3-Cylinder|
|Max. Output kW/rpm||41.1kW(2,200rpm)|
|Max. Torque Nm/rpm||200Nm(1,600rpm)|
We developed our first 3-cylinders industrial diesel engine to offer reduced exhaust emissions, reduction of the fuel consumption efficiency, and downsizing & lightening.
We reduced the number of cylinders to 3 from 4, and optimized an injection nozzle and a combustion chamber shape. As a result, the 1ZS realized downsizing & lightening, and reduction of the fuel consumption, keeping almost same output.
•Restraint of weight and the vibration
Usually, 3-cylinder engines have 6 counterweights, but the 1ZS has 4 counterweights to realize lightweighting. Generally, when the engine reduces the number of the weight, vibration increases, but the 1ZS instals balance weights to the crankshaft pulley, and the flywheel. As a result, it suppresses vibration like a 4-cylinder engine.
•Reduction of the friction in valves
The 1ZS changed the drive system of the valves into "Roller Rocker Arm" from direct type. As a result, it came true compact and reduction of the fuel consumption by reduction of the friction in valves. And it adopted the "Hydraulic Lush Adjuster" which adjusts valve-clearance with oil pressure automatically, and attained maintenance-free.
•Electronically controlled variable-nozzle turbocharger of the world's smallest class*2 and DPF-less engine system*3
The 1ZS adopted the exclusive turbocharger, and it achieved dramatic improvement in clean combustion by Injection nozzle and a newly designed combustion chamber. These features minimize the generation of PM*4 and eliminate the need for a DPF, while enabling the engine to meet exhaust emissions regulations in countries around the world*5 and improving the fuel consumption.
*2 Based on our reseach
*3 Disel particulate filter
*4 Particulate Matter
*5 Emission level
(1) North America : EPATier 4 Final compliant
(2) EU : Non road Stage IIIB compliant
(3) JPN : Non-road Special Mortor Vehicles emission regulasion(Amendmet:2013/03)