Supply module having a heating device for conveying an operating/auxiliary agent capable of freezing
AssigneeRobert Bosch GmbH
InventorsAndreas Doeffinger, Martin Kiontke
Life of this patent
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Abstract
The invention relates to a supply module (10) for conveying an operating/auxiliary agent capable of freezing for the exhaust gas aftertreatment of an internal combustion engine and for heating a reservoir holding the operating/auxiliary agent capable of freezing. The supply module (10) comprises a main heater (18) and an auxiliary heater (30), which are electrically contacted on a supporting body (24). A pot wall (52) of a heating pot (50) comprises electrical contacts (62) of the main heater (18) and electrical contacts (60) of the auxiliary heater (30).
Claims20
A supply module (10) for conveying a freezing-capable operating/auxiliary agent for an exhaust gas post-treatment of an internal combustion engine (1) and for heating a storage tank (79) that receives the freezing-capable operating/auxiliary agent, the supply module comprising:
- a heater pot (50) including an annular pot wall (52), the pot wall (52) having a central axis, a first periphery (68) at a first axial end of the pot wall (52), and a second periphery (70) at an opposite second axial end of the pot wall (52),
- a main heater (18) having a heater element (66) that runs around the pot wall (52), and
- an auxiliary heater (30) separate from the main heater (18),
- wherein the main heater (18) includes separate first and second electrical contacts (62),
- wherein the auxiliary heater (30) includes separate first and second electrical contacts (60),
- wherein the first and second electrical contacts (62) of the main heater (18) are separate from the first and second electrical contacts (60) of the auxiliary heater (30),
- wherein each of the first and second electrical contacts (62) of the main heater (18) and each of the first and second electrical contacts (60) of the auxiliary heater (30) is mounted on the pot wall (52), has a distal end, includes a portion extending beyond the second periphery (70) of the pot wall (52) to the distal end, and is elongated in a direction that is parallel to the central axis of the pot wall (52) over an entire extent of the portion extending beyond the second periphery (70) of the pot wall (52) to the distal end, and
- wherein the portions of the first and second electrical contacts (60) of the auxiliary heater (30) and the portions of the first and second electrical contacts (62) of the main heater (30) all extend in the same direction,
- wherein the first and second electrical contacts (60) of the auxiliary heater (30) lie in a concavity (54) of the pot wall (52),
- wherein the concavity (54) of the pot wall (52) is configured on an outer surface of the pot wall (52), and
- wherein the first electrical contact (62) of the main heater (18) is positioned on a first side of the concavity (54) of the pot wall (52) and the second electrical contact (62) of the main heater (18) is positioned on a second side of the concavity (54) of the pot wall (52) which is opposite the first side of the concavity of the pot wall (52), and wherein the first and second electrical contacts (62) of the main heater (18) are separated by the first and second electrical contacts (60) of the auxiliary heater (30).
A supply module (10) for conveying a freezing-capable operating/auxiliary agent for an exhaust gas post-treatment of an internal combustion engine (1) and for heating a storage tank (79) that receives the freezing-capable operating/auxiliary agent, the supply module comprising:
- a heater pot (50) including an annular pot wall (52), the pot wall (52) having a central axis, a first periphery (68) at a first axial end of the pot wall (52), and a second periphery (70) at an opposite second axial end of the pot wall (52),
- a main heater (18) having a heater element (66) that runs around the pot wall (52), and
- an auxiliary heater (30) separate from the main heater (18),
- wherein the main heater (18) includes separate first and second electrical contacts (62),
- wherein the auxiliary heater (30) includes separate first and second electrical contacts (60),
- wherein the first and second electrical contacts (62) of the main heater (18) are separate from the first and second electrical contacts (60) of the auxiliary heater (30),
- wherein each of the first and second electrical contacts (62) of the main heater (18) and each of the first and second electrical contacts (60) of the auxiliary heater (30) is mounted on the pot wall (52), has a distal end, and includes a portion extending beyond the second periphery (70) of the pot wall (52) to the distal end,
- wherein the portions of the first and second electrical contacts (62) of the main heater (18) and of the first and second electrical contacts (60) of the auxiliary heater (30) extend parallel to the central axis of the pot wall (52),
- wherein the first and second electrical contacts (60) of the auxiliary heater (30) lie in a concavity (54) of the pot wall (52), wherein the concavity (54) of the pot wall (52) is configured on an outer surface of the pot wall (52), and
- wherein the portions of the first and second electrical contacts (60) of the auxiliary heater (30) are first portions and the first and second electrical contacts (60) of the auxiliary heater (30) each include a second portion which is mounted on a portion of the pot wall (52), which extends in an opposite direction from the first portion, which terminates in the concavity (54) of the pot wall (52), and which is configured to be connected to a conductor (80) of the auxiliary heater (30).
Dependencies are inferred from the claim text.