Back to results
US 7,654,241 B2Granted
Dual-chamber type oil pan and engine equipped with same
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHideo Kobayashi, Katuhiko Arisawa, Yoshio Yamashita, Kunihiko Hayashi, Tametoshi Mizuta
Life of this patent
Estimating the term…
Abstract
A dual-chamber oil pan includes an oil pan provided below an engine block, an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber, and a suction port disposed within the first chamber. The first chamber includes a large-capacity portion including a bottom portion of the oil pan separator, and a small-capacity portion located above and integrally formed with the large-capacity portion.
Claims17
A dual-chamber oil pan comprising:
- an oil pan provided below an engine block;
- an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber;
- and
- a suction port disposed within the first chamber,
- the first chamber including a first portion including a bottom portion of the oil pan separator, and a second portion located above and integrally formed with the first portion, the first portion having a greater capacity than the second portion,
- wherein the first portion has a larger oil level area than that of the second portion.
3 more elements
A dual-chamber oil pan comprising:
- an oil pan provided below an engine block;
- an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber;
- and
- a suction port disposed within the first chamber,
- the first chamber including a first portion including a bottom portion of the oil pan separator, and a second portion located above and integrally formed with the first portion, the first portion having a greater capacity than the second portion,
- wherein the second portion has a constricted portion that is connected to an opening provided in an upper portion of the first portion and extends upwards.
3 more elements
A dual-chamber oil pan comprising:
- an oil pan provided below an engine block;
- an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber;
- and
- a suction port disposed within the first chamber,
- the first chamber including a first portion including a bottom portion of the oil pan separator, and a second portion located above and integrally formed with the first portion, the first portion having a greater capacity than the second portion,
- wherein the second portion has a hollow cylindrical portion that is connected to an opening provided in an upper portion of the first portion and extends upwards.
3 more elements
A dual-chamber oil pan comprising:
- an oil pan provided below an engine block;
- an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber;
- and
- a suction port disposed within the first chamber,
- the first chamber including a first portion including a bottom portion of the oil pan separator, and a second portion located above and integrally formed with the first portion, the first portion having a greater capacity than the second portion, and
- an oil port is provided in a shoulder portion of the first portion, and an oil valve closing the oil port as an oil level in the first chamber becomes high.
3 more elements
A dual-chamber oil pan comprising:
- an oil pan provided below an engine b1ock;
- an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber;
- and
- a suction port disposed within the first chamber,
- the first chamber including a first portion including a bottom portion of the oil pan separator, and a second portion located above and integrally formed with the first portion, the first portion having a greater capacity than the second portion,
- the dual-chamber oil pan further comprising:
- a first thermostat attached to the oil pan separator so that a temperature sensitive portion thereof faces the engine block;
- and
- a second thermostat attached to the oil pan separator so that a temperature sensitive portion thereof faces the first chamber.
6 more elements
An engine comprising:
- an engine block;
- and
- a dual-chamber oil pan including:
- an oil pan provided below the engine block;
- an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber;
- and
- a suction port disposed within the first chamber,
- the first chamber including a first portion including a bottom portion of the oil pan separator, and a second portion located above and integrally formed with the first portion, the first portion having a greater capacity than the second portion,
- wherein the first portion has a larger oil level area than that of the second portion.
6 more elements
Dependencies are inferred from the claim text.