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:
Feb. 24, 1981
Filed:
Jun. 26, 1978
Thomas W Hartford, Livonia, MI (US);
Alvin D Toelle, Fenton, MI (US);
The Bendix Corporation, Southfield, MI (US);
Abstract
An apparatus and method for supplying a predetermined volume of liquid fuel (20) to a cylinder of a diesel engine (10) is provided. A storage tank (22) stores a column of the liquid fuel (20) in a storage area (24). A position sensor (36) transmits an analog signal proportional to the height of the fuel (20) in the tank (22). A pressure transducer (32) disposed at the bottom of the storage area (24) transmits an analog signal corresponding to the static fluid pressure at the bottom of the storage area (24). A temperature transducer (56) disposed along a fuel rail (16) transmits an analog temperature signal to an electronic fuel injection computer (14). The computer (14) converts the analog height signal, the analog temperature signal and the analog pressure signal into digital values and mathematically divides the resulting digital values of height and pressure to obtain a digital value for the fuel density. A programmed ROM (72) of the computer (14) produces an output binary signal representative of a predetermined viscosity based on the instantaneous values of the temperature and the density of the fuel (20) over a range of values of the density and the temperature. The ROM (72) generates a three-dimensional surface representing values of viscosity based upon the temperature and the density. The output binary signal of the ROM (72) is used by the computer (14) through a diesel output control (11) to control a metering solenoid (13) of a fuel injector (12) which injects fuel into a cylinder of the engine (10).