US 12,055,074 B1 · Vehicle system

Abstract

A vehicle system includes a vehicle engine, a plurality of intake and exhaust valves coupled to the vehicle engine configured to adjust performance of the vehicle engine, and a camshaft coupled to the plurality of intake and exhaust valves and configured to control timing of the intake and exhaust valves. The vehicle system also includes a camshaft phaser configured to adjust the position of an engine's camshaft. Moreover, the vehicle system includes a vehicle processor. The vehicle processor is configured to store data including vehicle data, and apply increased oil pressure to the camshaft phaser based on vehicle data such that oil pressure is increased at a predetermined vehicle data range of camshaft phaser instability to prevent future camshaft position instability.

Claims18

Dependent claims

A vehicle system comprising:

a vehicle engine including a camshaft phaser configured to adjust performance of the vehicle engine;
and
a vehicle processor configured to:
store data including vehicle data;
and
apply increased oil pressure to the camshaft phaser based on vehicle data such that oil pressure is increased at a predetermined vehicle data range indicative of camshaft phaser instability so as to prevent future camshaft position instability;
wherein the vehicle data includes data related to engine load such that the oil pressure is increased as the engine load decreases.

4 more elements

A vehicle system comprising:

a vehicle engine including:
a plurality of intake and exhaust valves configured to adjust performance of the vehicle engine;
a camshaft coupled to the plurality of intake and exhaust valves so as to control a timing of the plurality of intake and exhaust valves;
and
a camshaft phaser configured to adjust a position of the camshaft relative to a crankshaft of the vehicle engine;
and
a vehicle processor configured to:
store data including vehicle data and camshaft data;
determine whether the camshaft phaser is within a predetermined unstable range based on the vehicle data and the camshaft data, the vehicle data including data related to engine load;
and
apply incremental oil pressure increases to the camshaft phaser when the camshaft phaser is within the predetermined unstable range so as to prevent future instability, the oil pressure being increased as the engine load decreases.

8 more elements

Dependencies are inferred from the claim text.

Vehicle system

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Vehicle system

Life of this patent

Abstract

Claims18