Drive mechanism for a mobile vehicle
AssigneeZF Friedrichshafen AG
InventorJürgen Legner
Life of this patent
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Abstract
A drive mechanism for a mobile vehicle has one first hydraulic motor (9) and one second hydraulic motor (10) which are in permanent operative connection via a summarizing transmission (12, 14) and drive one output shaft (17). In order to make possible, driving a first hydromotor (9) above its admissible maximum rotational speed, the first hydromotor (9) is adjusted to zero displacement and hydraulically separated form the high pressure.
Claims17
A drive mechanism for a mobile vehicle having first and second hydromotors (9, 10) wherein at least one of the first and the second hydromotors is adjustable in its displacement and the first and the second hydromotors are in permanent operative connection with an output shaft (17), the first and the second hydromotors (9, 10) both being connected with a common high-pressure line (2),
- wherein a displacement of at least one of the first and the second hydromotors (9, 10) is adjustable to almost no displacement, and said at least one of the first and the second hydromotors (9, 10) is uncouplable from said common high-pressure line (2).
A drive mechanism for a mobile vehicle having first and second hydromotors (9, 10);
- wherein at least one of the first and the second hydromotors has a displacement which is adjustable and the first and the second hydromotors are in permanent operative connection with an output shaft (17), the first and the second hydromotors (9, 10) are both connected with a common high-pressure line (2), the displacement of the at least one of the first and the second hydromotors is adjustable to substantially no displacement, and said at least one of the first and the second hydromotors (9, 10) is uncouplable from said common high-pressure line (2);
- one valve (8) separates the first hydromotor (9) from the common high-pressure line (2) and connects a pressure-medium supply line (18) and a pressure-medium return line (19) of said first hydromotor (9) with one line (20) which is acted upon by one of a pressure of a feed pump (4) and a lubrication pressure of a line (57) after a radiator (56).
A drive mechanism for a mobile vehicle comprising:
- a first hydromotor (9) for displacing hydraulic fluid;
- a second hydromotor (10) for displacing hydraulic fluid;
- and
- an output shaft (17) being permanently operatively connected with the first and the second hydromotors (9, 10) and the first and second hydromotors (9, 10) both being connected with a common high-pressure line (2);
- wherein at least the first motor hydromotor (9) has a variable displacement of hydraulic fluid and the variable displacement of hydraulic fluid of the first hydromotor (9) is adjustable to substantially zero hydraulic fluid displacement, and the first hydromotor (9) can be uncoupled from the common high-pressure line (2).
Dependencies are inferred from the claim text.