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US 4,615,316 AGranted
Control method and apparatus for protecting engine from excessive wear and the like
AssigneeNissan Motor Co., Ltd.
InventorSeishi Yasuhara
Life of this patent
Estimating the term…
Abstract
In order to prolong the life of the engine the maximum temperature and engine speed thereof are limited in accordance with the temperature of the engine coolant by controlling the amount of fuel supplied to said engine. During "running-in" of the engine the maximum temperature and engine speed limits are gradually increased until a predetermined amount of distance has been traversed by the vehicle in which the engine is disposed.
Claims12
A method of operating an internal combustion engine of a vehicle comprising the steps of:
- (a) sensing the temperature of the engine coolant;
- (b) automatically sensing the distance traversed by the vehicle;
- and
- (c) limiting the maximum amount of fuel which may be supplied to the engine in accordance with a schedule which varies the amount of fuel injection in accordance with the temperature of the engine coolant and the distance traversed by the vehicle.
1 more element
An internal combustion engine for a vehicle comprising:
- an air-fuel mixture forming device;
- a fuel supply arrangement for supplying fuel to said air-fuel mixture forming device;
- a manually operable member operatively connected with said fuel supply arrangment for providing a signal indicative of the amount of fuel to be supplied to said air-fuel mixture forming device;
- means for producing a signal indicative of the distance traversed by said vehicle;
- an engine coolant temperature sensor;
- an engine speed sensor;
- and
- a control unit for controlling the amount of fuel supplied to the engine in response to said manually operative member, said producing means, said engine coolant temperature sensor and said engine speed sensor.
5 more elements
Dependencies are inferred from the claim text.