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:
May. 01, 2018
Filed:
Feb. 22, 2016
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A boost switching device () for generating a boosted high voltage (Vh) includes a slew rate selection circuit (), decreases a selection value (k) to suppress noises when the temperature of the boost switching device () is low, and increases the selection value (k) to suppress a temperature increase when the temperature thereof is high. An internal average temperature of an in-vehicle engine control apparatus () is detected by an environmental temperature detection device (), reference data () provided in a calculation control circuit unit () is used to calculate a relationship between a permissible engine rotational speed (Nk) at which the split injection can be continued at a current measured environmental temperature (Tx) and the selection value (k), and an appropriate selection value (k) corresponding to a current engine rotational speed (Ne) is determined.