Coolant delivery device for a cooling system of an internal combustion engine, in particular of a motor vehicle, cooling system, and internal combustion engine

Patent metadata

Field	Value
Publication number	US-10989101-B2
Application number	US-201916418392-A
Country	US
Kind code	B2
Filing date	May 21, 2019
Priority date	May 22, 2018
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A coolant delivery device for an internal combustion engine, in particular for a motor vehicle, includes a pump, a an activatable electric motor, a shut-off valve, a return line, a heating device, and a common module housing. The pump is configured to deliver liquid coolant, and includes a suction port configured to connect to a tank, and a pressure port for the coolant and which is assigned to the engine. The motor is configured to drive the pump. The valve is assigned to the suction port. The return line is configured to connect to the tank, and includes at least one check valve. At least the pump, motor, valve, heating device, and the at least one check valve together form a delivery module and are positioned in the common module housing.

First claim

What is claimed is:

1. A coolant delivery device for an internal combustion engine, comprising:
a pump configured to deliver a liquid coolant, the pump including:
a suction port configured to connect to a tank; and
a pressure port configured to be assigned to the internal combustion engine for the coolant;

an activatable electric motor configured to drive the pump;
a shut-off valve assigned to the suction port;
a return line configured to connect to the tank, the return line including at least one check valve;
a heating device; and
a common module housing;
wherein, to form the coolant delivery device, at least the pump, the electric motor, the shut-off valve, the at least one check valve, and the heating device together form a delivery module and are positioned in the common module housing.

2. The coolant delivery device of claim 1 , further comprising one or more of:
at least one first filter positioned in the common module housing and assigned to the suction port; and
at least one second filter positioned in the common module housing and assigned to the pressure port.

3. The coolant delivery device of claim 1 , further comprising:
at least one pressure sensor positioned in the common module housing and assigned to the pressure port.

4. The coolant delivery device of claim 3 , further comprising:
at least one second filter positioned in the common module housing and assigned to the pressure port;
wherein the at least one pressure sensor is positioned downstream of the at least one second filter.

5. The coolant delivery device of claim 1 , further comprising:
a pressure damper positioned in the common module housing and assigned to the pressure port.

6. The coolant delivery device of claim 1 , further comprising:
at least one second filter positioned in the common module housing and assigned to the pressure port;
wherein the second filter is positioned downstream of the return line.

7. The coolant delivery device of claim 1 , wherein the heating device is either an electrically operable heating device or is a hydraulic heating device.

8. The coolant delivery device of claim 1 , wherein the electric motor includes at least one coil that is operable as the heating device.

9. The coolant delivery device of claim 1 , wherein the common module housing is formed from plastic.

10. The coolant delivery device of claim 1 , wherein the heating device includes at least one heat-conducting element that is encompassed, at least in part, by the common module housing.

11. The coolant delivery device of claim 1 , wherein the common module housing is formed from metal.

12. The coolant delivery device of claim 1 , wherein the common module housing includes a heat-insulating shell.

13. The coolant delivery device of claim 1 , wherein the coolant delivery device is a water delivery device for a water injection system of the internal combustion engine.

14. A coolant system for an internal combustion engine of a motor vehicle, comprising:
a tank configured to provide a liquid coolant;
an injection valve configured to inject the coolant into a combustion chamber or an intake pipe of the internal combustion engine; and
a coolant delivery device configured to deliver the coolant from the tank to the injection valve, the coolant delivery device including:
a pump configured to deliver the coolant, the pump including:
a suction port connected to the tank; and
a pressure port configured assigned to the internal combustion engine for the coolant;

an activatable electric motor configured to drive the pump;
a shut-off valve assigned to the suction port;
a return line connected to the tank, the return line including at least one check valve;
a heating device; and
a common module housing;
wherein, to form the coolant delivery device, at least the pump, the electric motor, the shut-off valve, the at least one check valve, and the heating device together form a delivery module and are positioned in the common module housing.

15. An internal combustion engine for a motor vehicle, comprising:
a coolant system including:
a tank configured to provide a liquid coolant;
an injection valve configured to inject the coolant into a combustion chamber or an intake pipe of the internal combustion engine; and
a coolant delivery device configured to deliver the coolant from the tank to the injection valve, the coolant delivery device having:
a pump configured to deliver the coolant, the pump including:
a suction port connected to the tank; and
a pressure port configured assigned to the internal combustion engine for the coolant;

an activatable electric motor configured to drive the pump;
a shut-off valve assigned to the suction port;
a return line connected to the tank, the return line including at least one check valve;
a heating device; and
a common module housing;
wherein, to form the coolant delivery device, at least the pump, the electric motor, the shut-off valve, the at least one check valve, and the heating device together form a delivery module and are positioned in the common module housing.

Assignees

• Bosch Gmbh Robert

Inventors

• Burak Ingmar
• Schenk Peter
• Obergfaell Simon

Classifications

• F02B47/02 Primary

  the substances being water or steam · CPC title

• F02M25/0221

  Details of the water supply system, e.g. pumps or arrangement of valves · CPC title

• F01P9/02 Primary

  Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P3/22 {; evaporation or evaporation apparatus for physical or chemical purposes, e.g. evaporation of liquids for gas phase reactions B01B1/005}) · CPC title

• F02M25/025

  Adding water · CPC title

• F01P5/12

  Pump-driving arrangements · CPC title