Shared power street sweeper
First Claim
1. A power delivery system for a vehicle, the power delivery system comprising:
- a. a chassis engine configured to power driving functions of the vehicle;
b. an auxiliary engine configured to power non-driving functions of the vehicle;
c. a hydraulic pump selectively engaged with the chassis engine and having a fluid inlet and a fluid outlet;
d. a hydraulic motor engaged with the auxiliary engine and having a fluid inlet and a fluid outlet; and
e. a hydraulic circuit including;
i. a fluid reservoir;
ii. a first hydraulic branch line extending between the hydraulic pump fluid outlet and the hydraulic motor fluid inlet;
iii. a second hydraulic branch line extending between the first hydraulic branch line and the fluid reservoir;
iv. a valve assembly in fluid communication with the first and second hydraulic branch lines;
f. the power delivery system having a shared power ON mode in which power is transferred from the chassis engine to the auxiliary engine, wherein;
i. the hydraulic pump is engaged with the chassis engine;
ii. the valve assembly places the hydraulic pump fluid outlet in fluid communication with the hydraulic motor fluid inlet;
g. the power delivery system having a shared power OFF mode in which no power is transferred from the chassis engine to the auxiliary engine, wherein;
i. the hydraulic pump is disengaged from the chassis engine;
ii. the valve assembly places the hydraulic motor fluid inlet in fluid communication with the reservoir via the second hydraulic branch line.
3 Assignments
0 Petitions
Accused Products
Abstract
A power delivery system for a vehicle is disclosed. In one embodiment, the power delivery system includes a chassis engine configured to power driving functions of the vehicle and an auxiliary engine configured to power non-driving hydraulic functions of the vehicle. The power delivery system may also include a power boost system comprising a hydraulic pump and a hydraulic motor in fluid communication with each other. The hydraulic pump may be coupled to a power output of the chassis engine while the hydraulic motor may be coupled to a power output of the auxiliary engine. In one embodiment, the power delivery system has a power sharing mode in which power is transferred from the chassis engine power output to the auxiliary engine power output via the hydraulic pump and motor such that the non-driving hydraulic functions of the vehicle are simultaneously powered by the chassis engine and the auxiliary engine.
51 Citations
9 Claims
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1. A power delivery system for a vehicle, the power delivery system comprising:
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a. a chassis engine configured to power driving functions of the vehicle; b. an auxiliary engine configured to power non-driving functions of the vehicle; c. a hydraulic pump selectively engaged with the chassis engine and having a fluid inlet and a fluid outlet; d. a hydraulic motor engaged with the auxiliary engine and having a fluid inlet and a fluid outlet; and e. a hydraulic circuit including; i. a fluid reservoir; ii. a first hydraulic branch line extending between the hydraulic pump fluid outlet and the hydraulic motor fluid inlet; iii. a second hydraulic branch line extending between the first hydraulic branch line and the fluid reservoir; iv. a valve assembly in fluid communication with the first and second hydraulic branch lines; f. the power delivery system having a shared power ON mode in which power is transferred from the chassis engine to the auxiliary engine, wherein; i. the hydraulic pump is engaged with the chassis engine; ii. the valve assembly places the hydraulic pump fluid outlet in fluid communication with the hydraulic motor fluid inlet; g. the power delivery system having a shared power OFF mode in which no power is transferred from the chassis engine to the auxiliary engine, wherein; i. the hydraulic pump is disengaged from the chassis engine; ii. the valve assembly places the hydraulic motor fluid inlet in fluid communication with the reservoir via the second hydraulic branch line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification