The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2001
Filed:
Nov. 14, 2000
Hirokazu Kurihara, Fujisawa, JP;
Takao Kodaira, Fujisawa, JP;
Toshiaki Adachi, Fujisawa, JP;
Takao Fujisaki, Fujisawa, JP;
Takao Inoue, Fujisawa, JP;
Naoki Yanagisawa, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
A turbo charger system (,) for a diesel engine (,) with a simple structure, but improved in output, torque and fuel consumption rate. A high-stage turbine (,) and low-stage turbine (,) are provided in series on an exhaust gas line (,) of the engine (,). A high-stage compressor (,), which is connected to the high-stage turbine (,), and a low-stage compressor (,), which is connected to the low-stage turbine (,), are provided in series on an intake air line (,) of the engine (,). A bypass line (,) with a valve (,) is provided over the high-stage turbine (,). The bypass valve (,) is completely or substantially completely closed until the engine (,) reaches its maximum torque point (,) so as to raise a supercharging pressure. From the maximum torque point (,) to the maximum output point (,), the bypass valve (,) is gradually opened to adjust the supercharging pressure. The bypass valve is completely or substantially completely opened at the maximum output point (,) to suppress the supercharging pressure.