Back to results
US 6,142,110 AGranted
Engine having hydraulic and fan drive systems using a single high pressure pump
AssigneeCaterpillar Inc.
InventorsBradley E. Bartley, James R. Blass, Dennis H. Gibson
Life of this patent
Estimating the term…
Abstract
An engine comprises a hydraulic system attached to an engine housing that includes a high pressure pump and a hydraulic fluid flowing through at least one passageway. A fan drive system is also attached to the engine housing and includes a hydraulic motor and a fan which can move air over the engine. The hydraulic motor includes an inlet fluidly connected to the at least one passageway.
Claims20
An engine comprising:
- an engine housing;
- a hydraulic system attached to said engine housing and including a hydraulic fluid flowing through at least one passageway and a high pressure pump;
- a fan drive system attached to said engine housing and including a hydraulic motor and a fan positioned to move air over said engine;
- said hydraulic motor has an inlet fluidly connected to said at least one passageway;
- and
- a flow regulating valve positioned in said at least one passageway and having a position at which said hydraulic fluid flows simultaneously through said hydraulic system and said fan drive system.
3 more elements
A combined hydraulic and fan drive system comprising:
- an engine having an engine housing;
- a high pressure pump having at least one outlet;
- a fan drive system attached to said engine housing and having a flow passage with one end fluidly connected to said at least one outlet;
- a hydraulic system attached to said engine housing and having a plurality of hydraulically actuated devices with inlets fluidly connected to said at least one outlet;
- and
- a flow regulating valve positioned between said flow passage and said at least one outlet, and having a position at which both said fan drive system and said hydraulic system are fluidly connected to said high pressure pump.
3 more elements
A combined hydraulically actuated fuel injection and fan drive system comprising:
- an engine having an engine housing;
- a high pressure pump attached to said engine housing and having an inlet fluidly connected to a source of fluid and at least one outlet;
- a fan drive system attached to said engine housing and having a flow passage with one end fluidly connected to said at least one outlet;
- a high pressure common rail fluidly connected to said at least one outlet;
- a plurality of hydraulically actuated fuel injectors fluidly connected to said common rail and attached to said engine housing;
- and
- a flow regulating valve positioned between said flow passage and said at least one outlet, and having a position at which both said fan drive system and said plurality of hydraulically actuated fuel injectors are fluidly connected to said high pressure pump.
4 more elements
Dependencies are inferred from the claim text.